Isotropic Magnets Research Articles

Efficient current-driven magnetization switching owing to isotropic magnetism in a highly symmetric 111-oriented Mn4N epitaxial single layer

We investigated in-plane current-induced magnetization switching in a Mn4N epitaxial single layer. Efficient magnetization switching was detected via the measurement of anomalous Hall resistivity after the application of current pulses, with a duration of 1 s, to the 111-oriented Mn4N film compared with a reference 001-oriented Mn4N film. The threshold current density of magnetization switching with 0.5 s pulse durations, Jc ≈ 1 MA/cm2, was relatively low compared with that reported for magnetic tunnel junctions and/or ferromagnet/heavy metal bilayer systems. The relatively low Jc in the 111-oriented film was attributed to the low magnetic anisotropy on the (111) plane of Mn4N owing to the isotropic crystal symmetry as revealed by x-ray diffraction and transmission electron microscopy as a reduced switching barrier boosts the probability of magnetization switching. It was concluded that manipulation of the magnetic anisotropy based on the crystal orientation is one of the promising approaches to develop materials suitable for application in highly efficient switching devices with Mn4N layers.

Production of anisotropic hot deformed Nd-Fe-B magnets with the addition of Pr-Cu-Al alloy based on nanocomposite ribbon

For usual grain boundary diffusion, the diffused source infiltrates into the magnet from the surface, and a long diffusion distance leads to non-uniform distribution of elements, which seriously restricts the improvement of properties and reduces the uniformity of coercivity. In this work, based on nanocomposite Nd-Fe-B ribbon, a short-range grain boundary diffusion (SRGBD) process is employed to improve coercivity, obtaining a high coercivity of 24.27 kOe in PrCuAl-diffused nanocomposite powder, increasing by 233.0% comparing to the initial ribbon. By spark plasma sintering (SPS) technique, an isotropic magnet with high coercivity of 24.13 kOe is prepared, and meanwhile, good uniformity of coercivity is also achieved. The disappearance of the α-Fe phase and the formation of intergranular phases contribute to a huge improvement of coercivity. At last, with the help of the intergranular phase, established by SRGBD, anisotropic magnets are successfully prepared through hot deformation, which the optimum magnetic properties with Hci = 18.99 kOe, Jr = 1.08 T, and (BH)max = 215 kJ/m3 can be achieved.

SWCNTs Interaction with Dopamine and Serotonin Anticancer Through QM/MM Methods: A Drug Delivery Approaches

Objetive: Dopamine and Serotonin are the two important biological transmitters that have hormonal activities and responsible for happiness and felling well. The aim of this article was to study theoretically the structure features of Dopamine and Serotonin in the complex of single-walled carbon nanotube as a neurotransmitter. Material and Methods: The structure of Dopamine and Serotonin binding with SWCNT with four different diameters (7.0,7.5,7.7,10.0 nm) was studied by using molecular mechanic (MM) and quantum mechanic (QM). The remarkable energies including potential energy, total energy and kinetic energy in time of simulation 10 ns steps in two temperatures (298, 310 kelvin degree) were investigated by Monte Carlo method with opls force filed. NMR shielding tensor data by B3LYP level of theory with 6-31 G(d) as a basis set and semi empirical method have been also fulfilled. Results: Theoretical computations were performed to study NMR chemical shift data including magnetic shielding tensor (σ, ppm), shielding asymmetry (η), magnetic shielding anisotropy (σaniso), magnetic shielding isotropy (σiso) , skew of a tensor (Κ) and chemical shift anisotropy (Δσ) and span (Ω) at various rotation angles around a specific rotation, physical and chemical properties of atomic nuclei. Semi empirical calculations such as total energy, binding energy, isolated atomic energy, electronic energy, core–core interaction and heat of formation in AM1 were revealed. Conclusion: It is figured out in Monte Carlo method our two specific drug and its nanotube with small diameter are the most stable one than the others. The larger diameter leads the combination stability into lower value.

Correlation between anisotropic fractal dimension of fracture surface and coercivity for Nd-Fe-B permanent magnets

In this work, SEM images analysis and fractal dimension calculations are performed on the fracture surfaces for N50-type with low coercivity, 30 EH-type with high coercivity, and isotropic Nd-Fe-B permanent magnets. It is discovered for the first time that the difference between the fractal dimensions of fracture surface parallel and perpendicular to the c-axis D∥ and D⊥ for N50-type magnet with low coercivity is large, and the difference between the fractal dimensions of D∥ and D⊥ for 30 EH-type magnet with high coercivity is small. However, there is almost no difference in the fractal dimension of D∥ and D⊥ for isotropic magnet. The correlation between anisotropic fractal dimension of the fracture surface and coercivity is revealed. The difference between the fractal dimension of fracture surface D∥ and D⊥ not only reflects the difference in micro morphology, but also serves as an important performance parameter to characterize the coercivity of the magnet, which provides new insights for studying the relationship between the magnetic properties and the microstructure of permanent magnetic materials.

Interfacial magnetic coupling in Co/antiferromagnetic van der Waals compound FePS[formula omitted

In this study, a Co-thin film was deposited on the van der Waals compound of FePS3 for the investigation of interfacial magnetic coupling, which is crucial to the application in spintronic devices. As characterized by atomic force microscopy, the exfoliated FePS3 surface was composed of defects within ±1 monolayer height. The Co thin film covered the FePS3 substrate uniformly with a roughness within ±0.5 nm. The 2 nm-Pd/7 nm-Co/FePS3 exhibited isotropic magnetism in the surface plane and the magnetic coercivity drastically decreased by more than 50% when the temperature was elevated from 85 K to 110–120 K, which is nearly the Néel temperature of FePS3. This observation indicates the interfacial magnetic coupling between Co and FePS3. The Co/FePS3 magnetic coupling is robust even after annealing up to 200 °C. Furthermore, the measurement of X-ray magnetic circular dichroism confirmed the presence of non-compensated Fe moment along the in-plane direction is parallel to the Co magnetization direction. The net Fe-moment is supposed to play an essential role in mediating the magnetic coupling between the in-plane ferromagnetic Co and the perpendicular antiferromagnetic FePS3.

Exploiting random phenomena in magnetic materials for data security, logics, and neuromorphic computing: Challenges and prospects

Random phenomena are ubiquitous in magnetism. They include, for example: the random orientation of magnetization in an assembly of non-interacting isotropic magnets; arbitrary maze domain patterns in magnetic multilayers with out-of-plane anisotropy, random polarization, and chirality of an array of magnetic vortices; or Brownian skyrmion motion, among others. Usually, for memory applications, randomness needs to be avoided to reduce noise and enhance stability and endurance. However, these uncontrolled magnetic effects, especially when incorporated in magnetic random-access memories, offer a wide range of new opportunities in, e.g., stochastic computing, the generation of true random numbers, or physical unclonable functions for data security. Partial control of randomness leads to tunable probabilistic bits, which are of interest for neuromorphic computing and for new logic paradigms, as a first step toward quantum computing. In this Perspective, we present and analyze typical materials that exhibit stochastic magnetic phenomena and we show some examples of emerging applications. The current challenges in terms of material development, as well as new strategies to tune stochasticity, enhance energy efficiency, and improve operation speeds are discussed, aiming to provide new prospects and opportunities in this compelling research field.

Investigation of different SWCNTs interaction with dopamine and serotonin anticancers: a theoretical study

Carbon nano tubes (CNTS) have two basic structure as single-walled and multi-walled based on hexagonal plexus of carbon atoms. CNTs can serve as platforms to conjugate other compounds specially in medications purposes by immobilization of biomolecules at their surface. Dopamine and serotonin are two biological molecules which have bifunctional activities as hormone and neurotransmitter. These two molecules have important roles as neurotransmitters in the central and peripheral nervous systems but serotonin functions as a mood regulator, while dopamine is connected to the “pleasure center”. In this article we optimized molecular and structural properties of connected dopamine and serotonin with SWNTS with four different diameters (7.0,7.5,7.7 and 10.0 nm) by using molecular quantum methods such as NMR shielding tensor data by B3LYP level of theory with 6-31 G(d) as a basis set, mk and frequency methods. Theoretical computations were performed to study NMR chemical shift data including magnetic shielding tensor (σ, ppm), shielding asymmetry (η), magnetic shielding anisotropy (σaniso), magnetic shielding isotropy (σiso) , skew of a tensor (Κ) and chemical shift anisotropy (Δσ) and span (Ω) at various rotation angles around a specific rotation , physical and chemical properties of atomic nuclei , frequency data by B3LYP/6-31g level of theory and POP method using gaussian 09 program.

New Types of Three-Dimensional Vortices in the Heisenberg Model

The Heisenberg model for an isotropic magnet is considered in this work. A substitution that reduces the corresponding equations to equations with a simpler geometric interpretation is applied. One of the solutions of the latter describes a new magnetic structure comprised of two straight intersecting vortex filaments, which change the topological charge after intersection.

Coercivity Dependence of Microwave Characteristics in Mechanically Alloyed SrFe<sub>11.9-y</sub>Mn<sub>y/2</sub>Ti<sub>y/2</sub>In<sub>0.1</sub>O<sub>19</sub> (y = 0; 0,3; and 1.2)

Recent investigation on indium substituted SrFe11.9In0.1O19 has shown excellent remanence to the saturation magnetization ratio of much greater than the 0.5 that most suitable for isotropic permanent magnets. In this work, such material SrFe12-xInxO19 (x = 0; 0,05; 0,1; 0,2; and 0,5) with the highest value of remanent magnetization was modified by the co-substitution of Fe+3 in SrFe11.9In0.1O19 with Mn and Ti ions to reduce the coercivity which suitable for radar absorbing applications. A series of magnetic material with SrFe11.9-yMny/2Tiy/2In0,1O19 (y = 0,3; 0,6; 1,0 and 1,2) compositions were prepared by mechanical alloying process. The hysteresis loop for SrFe11.9-yMny/2Tiy/2In0,1O19 samples showed that the coercivity was progressively reduced from 300 kA/m for y = 0,6 to 100 kA/m for y = 1.2 with the remanence remained significantly un-changed. The reflection loss (RL) which calculated from S-parameters of vector network analyzers (VNA) has resulted in excellent absorption characteristics of SrFe11.9-yMny/2Tiy/2In0,1O19 driven by high remanent magnetization and reduced coercivity.

Micromagnetic study for optimum performance of isotropic Nd2Fe14B/α-Fe nanocomposite bulk magnets

The nanocomposite magnets attract great interest in the study of high-performance magnets. Here, the micromagnetic simulations have been performed to investigate the effects of various microstructural factors such as grain geometry, grain size, and volume fraction on the performance of a soft-in-hard-matrix nanostructured Nd2Fe14B/α-Fe isotropic magnet. It is found that there is very little dependence of remanence on the geometry of the soft phase. The coercivity decreases with increasing the soft grain size, whereas it has a variation tendency depending on the size of hard grain size. In contrast to a significant role of soft-sphere geometry in anisotropic nanocomposites (Skomski et al 2013 IEEE Trans. Magn. 49 3215), the energy product of the soft-sphere system simulated here is slightly increased (8 kJ m−3), compared with that of the soft-cylinder system. In the meantime, a significant enhancement in energy product with increasing the soft grain size is observed only when the hard grain size is less than 15 nm. Our simulation predicts the highest energy product of 347 kJ m−3 with a hard grain size of 5 nm and a soft-sphere size of 12.4 nm (30 vol% of the soft phase). It is shown that the effective magnetocrystalline anisotropy is responsible for the variation in coercivity, based on its quantitative evaluation for the soft-sphere system.

High energy product of isotropic bulk Sm-Co/α-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains

Nanocomposite magnets consisting of hard and soft magnetic phases have potential applications to be the next generation of permanent magnets with very high energy product and less expensive rare-earth elements. But it is still a big challenge to obtain bulk magnets with ideal microstructure and high performance. In this work, two - step warm processing at relative low temperatures had been adopted to obtain nearly theoretical density bulk nanocomposite magnets from amorphous/nanocrystalline powder precursors. Novel nanostructures consisting of multiple Sm-Co hard phases (SmCo5 as main phase, SmCo3, SmCo7, Sm2Co17 as minor phases) and 25 wt% α-Fe(Co) soft phase, nanoscale grain size below 20 nm for both the hard phase and soft phase, and the diffusion of Fe and Co compositions had been obtained in bulk isotropic magnets. Besides the ideal nanostructures, a high coercivity of 5.9 kOe, Mr/Ms value of 0.78 and a high square degree of demagnetization curve S = 0.47 were obtained. All of these factors together brought a new record-high energy product (BH)max of 23.6 MGOe. These results make an important step toward fabricating novel nanostructure with high performance.

Strain-controlled electrical and magnetic properties of SrRuO3 thin films with Sr3Al2O6 buffer layers

SrRuO3 (SRO) thin films have been grown on a (001)-oriented SrTiO3 substrate with Sr3Al2O6 (SAO) buffer layers using pulsed laser deposition. X-ray diffraction results reveal that the epitaxial strain of SRO changes from compressive to relaxed or tensile ones by tuning the thickness of the SAO buffer layer (tSAO). We have demonstrated that the variation of strain has a strong influence on the microstructure and electrical and magnetic properties of SRO. When tSAO < 10 nm, the epitaxial strain is relaxed and the SRO film possesses higher Curie temperature resembling that of SRO bulk. Upon further increasing tSAO ≥ 10 nm, the SRO films are subjected to tensile strain, showing a typical step-and-terrace surface and coherent epitaxy characteristic on the SAO buffer layer. The electrical and magnetic properties of SRO are very sensitive to buffer layer-controlled epitaxial strain. The tensile strained SRO films show quite different electrical transport properties at low temperature, i.e., appearance of metal-insulator transition and positive magnetoresistances and the absence of non-Fermi-liquid behavior. Additionally, magnetic anisotropy is found in both the tensile and the compressively strained SRO, while the strain-relaxed film shows isotropic magnetization. Based on the electrical and magnetic properties, a phase diagram of SRO on the SAO buffer layer has been constructed.

Robust perpendicular magnetic anisotropy of Co3Sn2S2 phase in sulfur deficient sputtered thin films

Perpendicular magnetic anisotropy (PMA) in magnetic thin films is a fundamental key feature in the design of spintronic devices. As one of magnetic Weyl semimetals, ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ has been studied for its large anomalous Hall effect (AHE), uniaxial crystalline magnetic anisotropy, and half metallicity. In this study, we investigated the effect of off-stoichiometric composition on the PMA and AHE of ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{x}$ thin films fabricated by the sputtering technique. The prepared thin films have off-stoichiometric S compositions $x$ of 1.54 (S poor) and 3.27 (S rich) as well as the nearly stoichiometric one of 2.02. In addition to the ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ phase, the segregated Co metal is found to contribute to the measured magnetization in the S-poor and S-rich films. The coercive field of perpendicular magnetization in all the films is much larger than that in the ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ bulk crystals despite the fact that effective perpendicular magnetic anisotropy constants (${K}_{\mathrm{u}}^{\mathrm{eff}}$) between the prepared films are significantly different. In addition, the ${K}_{\mathrm{u}}^{\mathrm{eff}}$ values of two samples with $x=2.02$ and 2.22 are comparable to those of the bulk crystals. In contrast to the isotropic magnetization behavior in the S-rich film, the S-poor film holds the PMA feature. This result means that the PMA is more robust in the S-poor film than in the S-rich film. For the electrical transport properties, a large tangent of Hall angle of about 0.2 is observed for both the nearly stoichiometric and the S-poor films. This large tangent of Hall angle demonstrates that the Weyl feature of ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ phase is well maintained even in the S-poor thin films as well as the nearly stoichiometric films although the amount of Co segregation in both S-poor and S-rich films is similar. Our findings on the influence of off-stoichiometry on the PMA and AHE are beneficial to design magnetic devices incorporated with the Weyl features of ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$.

Texture analysis of ultra-high coercivity Sm2Co7 hot deformation magnets* *Project supports by the Science Center of the National Natural Science Foundation of China (Grant No. 52088101), the National Natural Foundation of China (Grant No. 51590880), the Fujian Institute of Innovation, Chinese Academy of Sciences (Grant No. FJCXY18040302), the Key Program of the Chinese Academy of Sciences (Grant No. KJZD-EW-M05-1), and

Bulk anisotropic Sm2Co7 nanocrystalline magnets were successfully prepared by hot deformation process using spark plasma sintering technology. The coercivity of the isotropic Sm2Co7 nanocrystalline magnet is 34.76 kOe, further, the ultra-high coercivity of 50.68 kOe is obtained in the anisotropic hot deformed Sm2Co7 magnet when the height reduction is 70%, which is much higher than those of the ordinarily produced hot deformed Sm2Co7 magnet. X-ray diffraction (XRD) analysis shows that all the samples are Sm2Co7 single phase. The investigation by electron backscatter diffraction indicates that increasing the amount of deformation is beneficial to the improvement of the (00l) texture of Sm2Co7 magnets. The Sm2Co7 nanocrystalline magnet generates a strong c-axis crystallographic texture during large deformation process.

Hard magnetic properties of FeCoNiAlCuXTiX based high entropy alloys

High entropy alloys (HEA) contain multiple principal alloying elements, and possess unique properties due to the high configurational entropy and lattice strain in the system. Ferromagnetic FeCoNi-based HEAs exhibit dramatic changes in crystal structure and the type of magnetism expressed when adding non-magnetic elements such as Al, Cr, Ga, Ti, etc. Interestingly, Alnico permanent magnets also contain multiple principal alloying elements, such as Fe, Co, Ni, and Al, along with other minor additions. This well-studied system is similar in concept to high entropy alloys (HEAs). In this paper, we investigate the hard magnetic properties of FeCoNiAl-based HEAs with additions of Cu/Ti. The addition of Cu/Ti to an equimolar FeCoNiAl alloy is effective at enhancing coercivity, due to spinodal decomposition, but at the expense of saturation magnetization. By varying the ratio of Fe and Co, however, with respect to the other alloying elements, the saturation magnetization is increased, while generally retaining or improving the coercivity. In particular, the Fe2CoNiAlCu0.4Ti0.4 HEA shows promising hard magnetic properties as an isotropic cast magnet, with an HC of 1,078 Oe and (BH)max of 2.06 MGOe, slightly better than the performance of isotropic cast Alnico 2 magnets. The thermal stability is also sufficient for use at elevated temperatures over 200 °C. There was also an interesting increase in high temperature coercivity observed at temperatures from ∼650-800 °C, where these alloys often exhibited higher coercivity than that measured at RT.

Magnetic properties and microstructure of Sm-Co-Fe-Cu-Zr-Hf spark plasma sintered magnets

In this work, Sm24.6Co50Fe17·4Cu5·7Zr2.3-xHfx (x = 0–2.0) ribbons and magnets were prepared by melt-spinning method and spark plasma sintering (SPS) technique. The magnetic properties of the melt-spun ribbons with Hf addition are much higher than those of the Hf-free ribbons in the temperature range of 300–400 K. The optimal comprehensive magnetic properties of ribbons and isotropic magnets were obtained with 1.0 wt% Hf substitution. Microstructural results showed that Hf elements do not enter into the hard magnetic 1:7H and 2:17R phase in SPSed magnets and Zr–Hf rich phases are formed around grain boundaries as particulates. The enhancement of magnetic properties of the ribbons and SPSed magnets can be attributed to grain refinement and more uniform microstructure as a result of Hf addition. The micro-twin structure of 2:17R phase also have been discovered in the spark plasma sintered magnets. This work may provide a rapid preparation of Sm2Co17 magnets.

Magnetic properties of ordered array of nanobumps of [Co/Ni]4, 10, 20 multilayers

Recently, bit patterned media (BPM) have been projected as one of the promising media for high density magnetic storage devices. In this work, we have studied the magnetic properties of Co/Ni multilayers-based BPM. Thin films of [Co(0.3 nm)/Ni(0.6 nm)]4, 10, 20 multilayers (MLs) were deposited on the barrier layer of an ordered array of nano-bump of anodic alumina (AAO) template using dc magnetron sputtering. From the measurement of room temperature magnetization hysteresis (M − H) curves, it is observed that [Co(0.3nm/Ni(0.6 nm)] nano bumps with N = 4 and 10 bi-layers exhibit magnetic isotropy behavior but, nanobumps with N = 20 bi-layers is found to display perpendicular magnetic anisotropy with an anisotropy constant (Ku) of 1.90 × 105 erg/cm3. The value of coercivity (HC) and squareness increases up to N = 10 bi-layers and then it further decreases for N = 20 bi-layer. The value of HC is found to be in the range of 100–200 Oe. The post-annealing of the nano-bumps enhances the coercivity but it destroys the perpendicular magnetic anisotropy. The obtained magnetic properties parameters on nano-bumps are compared with the properties of the same multilayers deposited on a flat Si substrate. It is observed that the values of HC for Co/Ni nanobumps was found to be higher in comparison to the films deposited on flat Si substrates, but squareness (MR/MS) and Ku were found to be lower.

Synthesis and binder-free assembly of SrFe12O19 nano-platelets for wafer-scale patterning of magnetic components

Monolithic integration of high-frequency magnetic components such as hexaferrite circulators at the wafer scale can lead to a significant improvement in radio frequency (RF) circuit performance and functionality. However, current methods to monolithically integrate hexaferrite films, such as liquid phase epitaxy, require high temperature (> 900 °C) annealing to create crystalline alignment, which is not compatible with integrated circuit process temperatures (< 350 °C) or thick patterned films (> 50 μm). In this work, we report the synthesis of pure phase, faceted, and high crystallinity hexaferrite [SrFe12O19] nano-platelets using a direct hydrothermal approach, followed by self-assembly of binder free SrFe12O19 films with high film density and high magnetic isotropy. The nano-platelets exhibit high staturation magnetization (~ 60 emu/g) and coercivity (Hc) of 815 Oe. The magnetic films exhibit dense nano-particle concentration and a magnetic squareness (Mr/Ms) of 0.7. They can be patterned using a selective assembly process through a thick photoresist mask. Thicknesses of up to 70 μm have been deposited on 4-in.-diamater wafers.

Effects of texture on lattice constants of Nd2Fe14B and their relationship with internal stress in Nd-Fe-B permanent magnets

Although crystallographic properties are considered to be intrinsic, several studies have reported significant different values for the lattice constants of the $\mathrm{N}{\mathrm{d}}_{2}\mathrm{F}{\mathrm{e}}_{14}\mathrm{B}$ phase. In this study, by analyzing rod-shaped isotropic (randomly oriented) and anisotropic ($c$-axis oriented) Nd-Fe-B bulk-sintered magnets, their powdered counterparts, and powder made from grinding a single crystal, we experimentally demonstrate that the lattice constants of the $\mathrm{N}{\mathrm{d}}_{2}\mathrm{F}{\mathrm{e}}_{14}\mathrm{B}$ phase in the ferromagnetic ordering state depend on the sample texture. The temperature dependence of the lattice constants was investigated by focusing on their expansion associated with ferromagnetic ordering, that is, the spontaneous linear expansion along the $a$-axis (${\ensuremath{\lambda}}_{a}$) and $c$-axis (${\ensuremath{\lambda}}_{c}$). The ${\ensuremath{\lambda}}_{a}$ value of the isotropic (anisotropic) bulk-sintered magnets at 105 K is 10% (2%) smaller while the ${\ensuremath{\lambda}}_{c}$ value is 130% (40%) greater than that of the powdered single crystal. These results indicate the presence of an internal stress perpendicular to the $c$-axis in the isotropic and anisotropic bulk-sintered magnets. In addition, we observed that the ratios of the length along the $a$-axis to that along the $c$-axis ($c/a$) for the various Nd-Fe-B magnets as well as those reported previously are correlated to the sample texture. In other words, the $c/a$ values of the sintered magnets are greater than those of the powdered samples. This result suggests that the sample texture and hence the internal stress has a determining effect on the lattice constants.

The in-plane magnetic anisotropy in manganite film: A novel magnetic anisotropy induced by structural anisotropy

Magnetic anisotropy plays an important role in the development of manganite-based magnetic devices. Establishing a deeper understanding of the anisotropy in manganites is useful for controlling their magnetic properties. We have studied the structure, lattice strain, and magnetic properties of La0.5Ba0.5MnO3 (LBMO-5) films with the thickness of 12 nm–96 nm, grown on the (001) SrTiO3 (STO) substrate. The LBMO-5 films are grown with high crystalline quality. The orientation relationship between the LBMO-5 film and the STO substrate [(001)f//(001)s, (010)f//(010)s, and (100)f//(100)s] exists at the film/substrate interface. With increasing the thickness of the film to 48 nm, the LBMO-5 film is fully strain relaxed. The LBMO-5 film shows the out-of-plane magnetic anisotropy (OMA) along the three mutually perpendicular crystalline axis directions. Usually, the manganite films with tetragonal distortion show both the OMA and the in-plane magnetic isotropy. However, the in-plane magnetic anisotropy (IMA) along the two mutually perpendicular in-plane directions ([010]f and [100]f) is clearly observed in LBMO-5 films. We attribute this new observation of the IMA to the in-plane structural anisotropy along the two distinct crystalline axes. Our studies provide helpful guidance for the understanding and the tuning of the IMA.