Mn Exchange Research Articles

Quantitative Decoupling of Strong Mn─Mn Coupling on Photoluminescence of Zero‐Dimensional Hybrid Manganese Chlorides Single Crystals

AbstractStrong Mn─Mn coupling interactions, including dipolar and exchange interactions, significantly affect the photoluminescence quantum yields (PLQYs) in Mn2+‐based luminescent materials. However, clarifying the individual effects of dipole–dipole and exchange interactions on photoluminescence (PL) is challenging because these interactions may have similar effects on PL properties, and there is a lack of materials with precisely tunable Mn─Mn distances over a wide range. In this study, the influence of dipolar and exchange coupling on PLQY is quantitatively decoupled by designing a series of hybrid manganese chlorides single crystals with a wide tuning range of Mn─Mn distances, from 6.0 to 9.5 Å. It is found that the PLQY can be enhanced from 2.1% to 57.1%, and the PL lifetime increased from 0.21 to 3.81 ms as the Mn─Mn distance increased. This enhancement is solely attributed to the decreased energy transfer dominated by dipole–dipole interactions. At the shortest Mn─Mn distance of 6 Å, exchange coupling becomes dominant, resulting in an additional red‐side PL band with negligible effects on PLQY and lifetime. This work provides valuable insights into the mechanisms underlying the regulation of PLQY in Mn2⁺‐based luminescent materials.

Observation of dielectric anomaly at magnetic transition temperature in NdMn1xZnxO3/SNTO (x = 0.00, 0.05, 0.10) films

We report our observation of dielectric anomaly from temperature–dependent dielectric study near the antiferromagnetic transition (TN) in pure and Zn–doped NdMnO3/SNTO (SrNb0.002Ti0.998O3) epitaxial films. Structural and microstructural studies showed the presence of compressive strain along the a–axis and changes in grain size due to Zn–substitution. The variation in the elemental concentration of Zn was confirmed by RBS measurements led to amend Mn–Mn exchange interactions in doped films. Alteration in TN due to Zn–doping, obtained from D.C. magnetization is consistent with the dielectric anomaly temperatures, indicating the presence of magnetoelectric effect in pure and Zn–doped NdMnO3/SNTO system.

Understanding the nature of the magnetic coupling in transition metal doped Bi2Se3

In this paper, we employ electronic structure theory to investigate the nature of the exchange coupling in transition metal doped Bi2Se3. We focus on V, Cr, Mn, and Fe, which have been under scrutiny for the realization of the quantum anomalous Hall effect. For simplicity, we model the doping process as happening inside a single layer of Bi within a single quintuple layer inside a three-formula-unit conventional hexagonal cell and consider situations of full coverage or half coverage. Due to the covalent nature of the chemical bond between transition metal atoms and selenium, this simple model is capable of describing the fundamental features of the intraplane exchange coupling, while offering a clearer analysis of the response to structural, magnetic, and electronic perturbations. In agreement with recent literature, our results confirm that the van Vleck mechanism has a very marginal contribution to the exchange coupling. Depending on the filling of the 3d shell and on the details of the electronic structure, several other mechanisms compete and cooperate to induce the magnetic order. For V, double exchange and superexchange cooperate to have the strongest ferromagnetic coupling among the investigated elements, followed by Cr where only superexchange is active. For Mn, superexchange and double exchange compete to create an extremely weak ferromagnetic order. For Fe, a strong antiferromagnetic coupling caused by the double exchange is observed to dominate over the ferromagnetic Ruderman-Kittel-Kasuya-Yosida interaction, but the high sensitivity of this competition to the doping concentration suggests that our conclusion may not hold in the dilute limit. Overall, Fe doping seems to offer the most intriguing competition of exchange mechanisms that can be tuned by adjusting the doping concentration and the details of the host, as, e.g., by replacing Se with Te or Bi with Sb. Published by the American Physical Society 2024

Facile preparation of Al/Mn bimetallic metal-organic frameworks for removing trace benzene indoor

The removal of trace benzene under humidity is still challenging in air treatment. Generally, MOFs have shown superior capture capacity than other adsorbents, but their uptake and hydrophobicity still need to be satisfied. Here, we reported a facile ion exchange method to obtain Al/Mn bimetallic MIL-53. The ion exchange of Mn under low temperatures could optimally maintain the structural integrities of obtained samples. Moreover, the in-situ monocarboxylic modulation could decrease the hydroxy content, improving the trace uptake while weakening the hydrophobicity. After ion exchange, the contents of OMS (open metal sites) and hydroxy both increased, upgrading the efficiency of trace benzene capture and improving the hydrophobicity under medium humidity. The optimal sample, Mn-A-25, performed well in trace benzene removal with 161 mg/g capacity under RH = 60 %, beyond two folds of MIL-53. Moreover, its hydrophobicity nearly equals that of MIL-53 (Qwet/Qdry = 0.96). The adsorption mechanism verified that increased adsorption enthalpy caused improved affinity on benzene. However, the adsorption was still driven by physical forces, which allowed for the visible desorption and superior regenerability of this adsorbent.

Orbitally driven spin reorientation in Mn-doped YBaCuFeO5

The oxygen-deficient layered perovskite YBaCuFeO5 (YBCFO) is a rare type-II multiferroic material where ferroelectricity, driven by incommensurate spiral magnetic order, is believed to be achievable up to temperatures higher than room temperature. A cycloidal spiral order rather than a helical spiral order is an essential ingredient for the existence of ferroelectricity in this material. Motivated by a recent experimental study on Mn-doped YBCFO where the spiral plane was observed to cant more towards the crystallographic c-axis upon Mn doping at Fe sites than in the parent compound, we performed a detailed theoretical investigation using density functional theory calculations to understand the mechanism behind such spin reorientation. Our total energy calculations, within the generalized gradient approximation plus U plus spin–orbit coupling approach, reveal that Fe/Cu spin moments indeed align more towards the c-axis in Mn-doped YBCFO than in the parent compound. The largest exchange interaction (Cu–Cu in the a−b plane) is observed to decrease systematically with Mn doping concentration, reflecting the lowering of the transition temperature seen in experiments. Further, the inter-bilayer Cu–Mn exchange interaction becomes ferromagnetic in Mn-doped YBCFO, whereas the corresponding Cu–Fe exchange is antiferromagnetic in the parent compound, giving rise to frustration in the commensurate magnetic order. Most importantly, our electronic structure calculations reveal that in Mn-doped YBCFO because of hybridization with the Mn dz2 orbital, the highest occupied Cu orbital becomes the dz2 orbital as opposed to the dx2−y2 orbital in the parent compound. Therefore, we believe that the occupancy of the out-of-plane-oriented Cu dz2 orbital in place of the planar dx2−y2 orbital along with the frustrating exchange interaction drives the spins to align along the c-axis in Mn-doped YBCFO.

Theoretical study on the magnetic properties of cathode materials in the lithium-ion battery.

The layered LiMO2 (M = Co, Ni, and Mn) materials are commonly used as the cathode materials in the lithium-ion battery due to the distinctive layer structure for lithium extraction and insertion. Although their electrochemical properties have been extensively studied, the structural and magnetic properties of LiNiO2 are still under considerable debate, and the magnetic properties of monoclinic LiMnO2 are seldom reported. In this work, a detailed study of LiNiO2, LiMnO2, and a half-doped material LiNi0.5Mn0.5O2 is performed via both first-principles calculations and Monte Carlo simulations based on the effective spin Hamiltonian model. Through considering different structures, it is verified that a structure with a zigzag-type pattern is the most stable one of LiNiO2. Moreover, in order to figure out the magnetic properties, the spin exchange interactions are calculated, and then magnetic ground states are predicted in these three systems. The results show that LiNiO2 forms a spiral order that is caused by the competition from both the short-range and long-range spin exchange interactions, whereas the magnetic ground state of LiMnO2 is collinearly antiferromagnetic due to its nearest and next-nearest neighbor antiferromagnetic spin exchange interactions. However, LiNi0.5Mn0.5O2 is collinearly ferrimagnetic because of the ferromagnetic nearest neighbor Ni-Ni and Mn-Mn exchange interactions. Our work demonstrates the competition between the different exchange interactions in these cathode materials, which may be relevant to the performance of the lithium-ion battery.

Noncollinear ferrimagnetism and anomalous Hall effects in Mn4N thin films

The magnetic structure of thin films of ferrimagnetic metallic Mn${}_{4}$N differs from the triangular ferrimagnetism of the bulk. Based on distance-dependence of Mn-Mn exchange and magnetic structures of other Mn${}_{3}$$X$N perovskites, a topological noncollinear spin structure is proposed for [001] Mn${}_{4}$N films with perpendicular anisotropy, which is confirmed by temperature-independent anomalous Hall conductivity coexisting with a normal temperature-dependent contribution. The study shows how a small symmetry change in the spin structure can influence magnetotransport properties of frustrated ferrimagnetic films.

MnTa2N4: A Ternary Nitride Spinel with a Strong Magnetic Frustration

Magnetic frustration results from competing magnetic interactions and leads to unusual ground states, ranging from non-collinear magnetic orders to spin liquids (SLs), opening the path to new physics and emerging properties. We report the engineered magnetic interaction design and synthesis of the new ternary nitride MnTa2N4 with a normal spinel structure, where the magnetic cations Mn2+ occupy exclusively the tetrahedral sites forming a diamond lattice. Although the magnetic interactions are strongly antiferromagnetic (θCW ≈ −140 K), a long-range magnetic order is not established, but a smooth magnetic anomaly is observed at T* ≈ 5.1 K, fingerprinting a large magnetic frustration. A short-range helicoidal magnetic order emerges at low temperatures. The ordered moment is ≈70% of the expected magnetic moment of Mn2+ ions and a large part (≈28%) of the spin entropy remains at 400 mK, signaling the coexistence of a helicoidal order with spin-glass-like or SL textures. First-principles calculations unveil an unexpected large direct Mn–Mn exchange interaction that balances the superexchange and accounts for the magnetic frustration. These findings open new avenues toward the design of quantum materials.

Two-stage ligand exchange in Mn(III)-based porphyrinic metal−organic frameworks for fluorescence water sensing

Metal−organic frameworks (MOFs) have emerged as promising materials for smart sensing and imaging applications. Here, a novel micron-biscuit Mn(III)-based porphyrinic MOF is synthesized with the modulation of 4,4′-biphenyldicarboxylic acid (BPDC). The anisotropic growth of MOF is induced by the increased steric hindrance, yielding micron-biscuit Mn-TCPP(BPDC) MOF crystals. Mn(III), as a sealer, quenched the intrinsic fluorescence of porphyrin because of the ligand-to-metal charge transfer (LMCT) effect, and this disappeared fluorescence can be regularly restored and enhanced due to LMCT effect inhibition and release of free porphyrin derived from the water-induced two-stage ligand exchange (TSLE) between BPDC, porphyrin and water. The as-prepared MOF acts as an excellent “signal-on” luminescent water-sensing probe with low amount (2.5 μg/mL) that can efficiently realize the trace detection of water in various organic media with high sensitivity, especially in dimethyl sulfoxide (DMSO), the detection limit is as low as 0.04% (v/v). Moreover, Mn-TCPP(BPDC) was successfully used for sensing water content in real commercial samples. This MOF with the guest-induced TSLE not only provides inspiration for the design of new luminescent materials, but also widens the path for smart sensing.

Measuring Soil Quality Indicators under Different Climate-Smart Land Uses across East African Climate-Smart Villages

The present study assessed soil physical-chemical characteristics as reliable soil health indicators in six climate-smart land use types; agroforestry, community forest, cropland with soil and water conservation (SWC), crop land without SWC, grassland and control across climate-smart villages (CSVs) in Lushoto (Tanzania), Hoima (Uganda), Wote and Nyando (Kenya). Soils were sampled at three depths; 0–15 cm, 15–45 cm and 45–100 cm and then analyzed for bulk density (BD), pH, exchangeable bases (Ca, Mg, K, Na), extractable Fe, Mn, Zn, exchangeable acidity (ExAc), Electrical conductivity (EC), total carbon (TC), total nitrogen (TN) and cation exchange capacity (CEC). Land use types and sampling depths significantly affected soil properties (p < 0.05), High bulk density (BD) was measured at 45–100 cm depth in grassland (1.47 g/cm3) and crop land (1.50 g/cm3) in Kenya and Tanzania, respectively. BD in Ugandan grasslands was statistically lower (p < 0.05) than BD in other land use types at all depths. Soil pH of surface soil (0–15 cm) ranged from 6.67 ± 0.67 (agroforestry) to 6.27 ± 0.85 (grassland). Ex. bases (Ca, Mg, K and Na) and extractable Fe, Mn, Zn, ExAc, EC, TC, TN and CEC were significantly affected by land uses (p ≤ 0.05). Soil properties were significantly correlated, a positive correlation between silt % (p < 0.01) and pH, sand and Ca (p < 0.05). EC and pH, exchangeable Ca, exchangeable bases, exchangeable K and C: N ratio was observed. There was a negative correlation (p < 0.05) between pH and clay. The study has shown that improving soil properties using land use systems leads to an increase in soil nutrients.

Effects of S/F doping and Li/Mn site exchange in Li2MnSiO4: A first-principles investigation of the structural, electrochemical and electronic properties

Effects of S and F doping and Li/Mn site exchange on structural, electrochemical and electronic properties of Li2MnSiO4 cathode materials are systematically studied by the first-principles calculations based on density functional theory within the generalized gradient approximation with Hubbard corrections (GGA+U). The calculated results about Modulus ratio B/G and Poisson ratio ν show that Li2MnSiO3.5R0.5 (R= S and F) possess excellent mechanical properties. The investigation of Young’s modulus E and Debye temperature θD indicates that the doping of S and F is beneficial to the migration of Li+. In addition, the doping of S and F can reduce the theoretical average deintercalation voltage during delithiation and improve the conductivity of Li2MnSiO4. The results also show that the site exchange of Li and Mn can effectively reduce the rate of cells volume change when one Li+ is removed in per formula unit for the doped systems. Moreover, the charge compensation is completely provided by O and S ions for the first Li+ removal in the S-doped system with Li/Mn site exchange, showing that the appearance of Mn3+/Mn4+Jahn–Teller effect can be delayed, which is beneficial in improving the cycle stability of the system. Also, F doping can play the similar role in delaying the appearance of Mn3+/Mn4+Jahn–Teller effect, which is due to extra electrons generated by the substitution of O2− with F−.

Cu doping-enhanced emission efficiency of Mn2+ in cesium lead halide perovskite nanocrystals for efficient white light-emitting diodes

Enhancing emission efficiency of Mn2+ in blue-orange dual-emitting Mn doped cesium lead halide perovskite nanocrystals (NCs) with high photoluminescence quantum yields (PL QYs) is important to fabricate high efficiency white light emitting diodes for solid state lighting. The synthesis and luminescent properties of Mn doped CsPbCl3-xBrx NCs through anion exchange of Mn and Cu co-doped CsPbCl3 NCs with PbBr2 at room temperature were studied by means of steady-state and time-resolved PL spectroscopy. The high Mn2+ PL QYs of 52–63% were obtained in the initial Mn and Cu co-doped CsPbCl3 NCs synthesized under various Mn/Pb/Cu molar ratios at 190 °C by hot injection method. A record Mn2+ PL QY up to 53% was achieved in the blue (450 nm) -orange (600 nm) dual-emitting Mn and Cu co-doped CsPbCl3-xBrx NCs through anion exchange. The enhancement of Mn emission efficiencies was attributed to reduced defect states in the doped NCs due to the incorporation of Cu ions. The efficient warm white light emitting diodes with color rendering index of 85 and luminous efficacy of 69 lm/W were fabricated by combination of the blue-orange dual-emitting Mn and Cu co-doped CsPbCl3-xBrx NCs and green emissive CsPbBr3@Cs4PbBr6 core/shell NCs. The improved color rendering index was demonstrated with increasing Mn content.

Structure and magnetic properties of LiMVO4 (M = Mn, Cu)

LiM2+VO4 compounds with spinel-related structures show interesting electrochemical, magnetic and multiferroic properties. Neutron powder diffraction data for LiMVO4 (M ​= ​Cu, Mn) were collected at room temperature and 1.5 ​K. In contrast to single crystal NPD results, no evidence of magnetic ordering was detected for LiCuVO4 at 1.5 ​K due to the incommensurate order and low Cu2+magnetic moment. For LiMnVO4 (space group Cmcm) a clear ordered magnetic state was determined for the first time: the chains of edge-shared MnO6 octahedra have antiferromagnetic (AFM) order within each chain, and also between chains to give C′ centring. The magnetic behaviour of the MnO6 chain can be well described by the classical one-dimensional Heisenberg model with an intra-chain exchange energy of J/k ​= ​−4.32 ​K. It is believed that direct dxy ​− ​dxy AFM interactions are dominant over 90° Mn–O–Mn exchange for determining the magnetic order.

Reclaimed Wastewater to Irrigate Olive Groves and Vineyards: Effects on Soil Properties

Having drinking water is one of the sustainable development goals (SDG no. 6) that is not always easy to ensure, especially in countries like Spain or arid regions marked by water deficit. The reuse of treated water should be considered when planning water resources, but it is necessary to verify that this effectiveness is applicable to real situations. A field trial was carried out in several study areas distributed in agricultural parcels of south east Spain. Soils from two olive groves and two vineyards irrigated with treated wastewater (TW) were monitored for to compare with other plantations irrigated with conventional well water (WW) since July 2016–September 2018. Five different irrigation water sources were analyzed (two from well water and three from reclaimed wastewater). No microbiological, metal content, toxicity or organic compounds (PAHs and PCBs) in the studied water samples were detected and reclaimed municipal wastewater was comparable in quality to the conventional sources at all the demonstration sites, except for higher electrical conductivity. Soils irrigated with TW had higher values for electrical conductivity, N, K, Na, Mg, Mn and cation exchange capacity. The main precautions to be considered when irrigating with treated wastewater are its salt content and its tendency to high values of electrical conductivity. Otherwise, they are an interesting contribution of nutrients to soil. Hence adopting this water type to irrigate orchards, vineyards and olive groves could help to save primary water resources.

Tuning magnetic properties of single-layer MnTe2 via strain engineering

We systematically study the strain-tuning effect on the electronic and magnetic properties of single-layer MnTe2 using first-principles calculations. The calculations show that the unstrained single-layer MnTe2 is an intrinsic ferromagnetic metal with a perpendicular magnetocrystalline anisotropy. The in-plane biaxial tensile strain greatly enhances the perpendicular magnetocrystalline anisotropy. The orbital-projected spin-orbit coupling energy indicates that the magnetocrystalline anisotropy energy mainly comes from the contribution of the Te atom although its magnetic moment is small. The ferromagnetic interaction between the nearest two Mn atoms is also strengthened significantly by the tensile strain. The Curie temperature increases from 88 K without strain to 440 K at 10% strain. Moreover, the single-layer MnTe2 becomes a half metal when the tensile strain is larger than 6%. If compressive strain is applied, the single-layer MnTe2 undergoes a spin reorientation transition from out-of-plane to in-plane magnetization. The compressive strain also induces the transition of the Mn–Mn exchange coupling from ferromagnetic to antiferromagnetic. The intrinsic ferromagnetic properties and the strong strain-tuning effect make the single-layer MnTe2 a promising candidate for spintronics applications.

Probe Mössbauer Diagnostics of Charge Ordering in Manganites CaCuxMn7–xO12 (0 ≤ x ≤ 1)

We present the results of our 57Fe probe Mossbauer study in manganites CaCuxMn6.96–x57Fe0.04O12 (0 ≤ x ≤ 1). We have established that for compositions 0 ≤ x ≤ 0.15 near the structural R$$\bar {3}$$ ↔ Im$$\bar {3}$$ transition (at T ≈ TCO), an increase in the temperature leads to a decrease in the content of the rhombohedral phase (R$$\bar {3}$$) against a background of the “nucleation” and gradual increase in the fraction of the cubic phase (Im$$\bar {3}$$), in which all octahedral positions of manganese are equivalent due to the electron exchange Mn3+ ↔ Mn4+. The increase in the electron exchange frequency is assumed to be related to a weakening of the electron–lattice interaction of Jahn–Teller Mn3+ cations as x → 0.4. An increase in the copper content leads to a sharp decrease in the phase transition temperature TCO. A single component corresponding to the cubic phase (Im$$\bar {3}$$) is present in the spectrum starting from x ≥ 0.4. Based on our Mossbauer data, we have constructed a T–x phase diagram.

In-Cell EPR Distance Measurements on Ubiquitin Labeled with a Rigid PyMTA-Gd(III) Tag

Double electron-electron resonance (DEER) measures distances between spin labels attached at well-defined sites in a protein and thus has the potential to report on conformational states of proteins in cells. In this work, we evaluate the suitability of the small and rigid 4PS-PyMTA-Gd(III) spin label for in-cell distance measurements. Three ubiquitin double mutants were labeled with 4PS-PyMTA-Gd(III) and delivered into human HeLa cells by electroporation (EP) and hypotonic swelling (HS). Gd(III)-Gd(III) DEER measurements were carried out on cells frozen after different incubation times, following delivery to test the stability of the spin label inside the cell. For both delivery methods, it was possible to derive distance distributions up to 12 h after delivery, although we observed a decrease in the amount of the delivered protein with time. Surprisingly, only one mutant reported a significant change in the distance distribution with time and only for HS delivery. On the basis of in vitro exchange experiments with Mn(II) and comparison with the same mutant labeled with BrPSPy-DO3MA-Gd(III) and considering the presence of Mn(II) in the cell, we hypothesized that the change occurred as a consequence of partial Gd(III)/Mn(II) exchange with endogenous Mn(II). These experiments also showed that the relative Gd(III)/Mn(II) binding affinity depends on the labeling site in the protein, which accounts for the lack of change with the other mutants delivered under HS conditions. We conclude that 4PS-PyMTA-Gd(III) is a good spin label for in-cell DEER for delivery by EP, but caution should be taken when HS is used.

Surface Ferromagnetism in Pr0.5Ca0.5MnO3 Nanoparticles as a Consequence of Local Imbalance in Mn3+:Mn4+ Ratio

Half-doped praseodymium manganites, Pr0.5Ca0.5MnO3, synthesized by the sol–gel method produce highly crystalline nanoparticles with no structural disorder at the surface. As for most half-doped (Mn3+:Mn4+ = 1) antiferromagnetic (AFM) charge-ordered manganites, ferromagnetism (FM) appears as particle size decreases. A possible origin of FM phase development is the lacking oxygen ligands at the surface that increases Mn3+ at the expense of Mn4+ in order to maintain electronic neutrality. In this work, we show that Mn3+:Mn4+ = 1 ratio is preserved in the whole crystalline particle with the exception of the surface, where this ratio changes to Mn3+:Mn4+ > 1. This Mn3+ excess makes a double exchange Mn3+ → O2– → Mn4+ prevail over the superexchange, giving rise to the FM interactions. We show that a shell thickness of only one unit cell, with acell = 0.38 nm, is enough to explain the onset of FM at the surface, whereas the volume remains AFM. Furthermore, the FM to AFM ratio fits to the increase of surface-to-v...

Does Symmetry Influence the Properties of [MnIII6CrIII]3+ Single‐Molecule Magnets?

The triplesalen complex [MnIII6CrIII](ClO4)3 was synthesized and characterized by single‐crystal X‐ray diffraction, UV/Vis/NIR spectroscopy, and DC and AC magnetic susceptibilities. The molecular structure is D3 symmetric, whereas all other salts and solvates of [MnIII6CrIII]3+ are S6 symmetric. The UV/Vis/NIR spectrum of D3 symmetric [MnIII6CrIII]3+ is almost identical to that of S6 symmetric [MnIII6CrIII]3+ demonstrating that the electronic structure is not significantly perturbed by the symmetry variation. The magnetic data of D3 symmetric [MnIII6CrIII]3+ is also similar to those of S6 symmetric [MnIII6CrIII]3+ with antiferromagnetic JMn–Mn exchange coupling. This is in contrast to the ferromagnetic JMn–Mn exchange coupling in the chiral RR[MnIII6CrIII]3+ synthesized with a chiral triplesalen derivative. Due to the chirality, RR[MnIII6CrIII]3+ is also of D3 symmetry. However, its UV/Vis/NIR spectrum differs to those of D3 and S6 symmetric [MnIII6CrIII]3+. This indicates that the electronic and magnetic properties of RR[MnIII6CrIII]3+ are not different to those of [MnIII6CrIII]3+ due to the symmetry variation but due to the specific properties of the two triplesalen ligands.

Synthesis, characterization and ferromagnetic properties of Zn1-xMnxO (x ≤ 0.05) nanoparticles

Zn1-xMnxO (x ≤ 0.05) nanoparticles were synthesized by a combination of room temperature precipitation and high temperature calcination. Pure hexagonal wurtzite ZnO nanoparticles with the size of ≤100 nm and a dominant vibrational peak at 437 cm−1 of E2H non-polar optical phonon mode were detected. The present research was succeeded in doping of ZnO lattice by Mn2+ ions, including the detection of an additional peak at 528 cm−1 associated with lattice defects. Magnetic properties of Zn1-xMnxO (x ≤ 0.05) nanoparticles were controlled by correlated spin of Mn–O–Mn exchange couple and lattice disorder. The saturation magnetization of ferromagnetic Zn0.97Mn0.03O was the highest at 51.49 × 10−3 emu/g.