Magnetic Dead Layer Research Articles

Origin of the Surface Magnetic Dead Layer in Rare‐Earth Titanates

Origin of the Surface Magnetic Dead Layer in Rare‐Earth Titanates

Emergent quasi-two-dimensional ferromagnetic state with perpendicular magnetic anisotropy at La0.7Sr0.3MnO3/SrCuO2 interface

Due to the strong interlayer coupling between multiple degrees of freedom, oxide heterostructures usually produce distinct interfacial phases with unexpected functionalities. Here, we report on the realization of quasi-two-dimensional ferromagnetic state in ultrathin La0.7Sr0.3MnO3 (LSMO) layer down to two unit cells (u.c.), being sandwiched by the planar infinite-layer structured SrCuO2 layers (P-SCO). We find the LSMO/P-SCO interface coupling has greatly suppressed the magnetic dead layer of LSMO, resulting in an emergent interfacial ferromagnetic phase. Thus, robust ferromagnetic order can be maintained in the 2 u.c.-thick LSMO layer (∼7.7 Å), showing a Curie temperature of ∼260 K and remarkable perpendicular magnetic anisotropy. X-ray absorption spectra reveal notable charge transfer from Mn to Cu at the interface, and thus, resulted preferential d3z2−r2 orbital occupation for interfacial Mn ions plays an important role in the inducing of perpendicular magnetic anisotropy in quasi-two-dimensional LSMO layer. Our work demonstrates a unique approach for tuning the properties of oxides via an interface engineering of oxygen coordination in perovskite/infinite-layer heterostructures.

Enhancement of magnetization and optical properties of CuFe2O4/ZnFe2O4 core/shell nanostructure

In this work, core/shell of CuFe2O4/ZnFe2O4 nanostructure composite was prepared by hydrothermal method. X-ray diffraction (XRD) analysis, transmission electron microscope imaging, energy dispersive X-ray (EDX), and Fourier transform infrared techniques were used to prove the phase formation, morphology, elemental analysis, and cation distribution of core/shell structure, respectively. Furthermore, measurement of the optical properties proved the decrease of photoluminescence (PL) efficiency. The magnetic measurements showed an enhancement of the magnetization by about 63% relative to pure Cu ferrite, and the magnetization curve exhibited superparamagnetic behavior. These results were explained in terms of the depression of the magnetic dead layer thickness in the core/shell structure. The results unleash the promising applications of the prepared samples as transformer cores in the high frequency range and as a photocatalytic agent for water purification and hydrogen production.

Magnetism of MoS2 bilayers with intercalated and surface adsorbed Fe

Magnetic thin films composed of two-dimensional van der Waals materials will play an important role in future spintronics devices. Recently, Tuli et al. performed in-situ MOKE measurements of Fe deposited on an MoS2 substrate and found that a magnetic dead layer (MDL) exists up to approximately 2 Å (Tuli et al. (2021)). To understand the origin of the MDL, we investigate MoS2 bilayers with intercalated and surface adsorbed Fe using first-principles calculations. The results show that the Fe-intercalated bilayer MoS2 is more stable than the bilayer MoS2 with surface adsorbed Fe. The Fe-intercalated bilayer MoS2 is non-magnetic and behaves as the MDL. The systematic investigation of variation in the inter-layer distance between the intercalated Fe layer and surface of MoS2 layer reveals that the strong hybridization between Fe and S is the origin of the MDL. We also show that further intercalation of Fe makes the film magnetic. The results provide a deep understanding of the MDL in two-dimensional van der Waals magnetic materials.

Enhanced Ferromagnetism in Atomically Thin Oxides Achieved by Interfacial Reconstruction

AbstractDiscoveries of ferromagnetic materials with ultrathin thickness are of great importance for both fundamental science and technological applications. Transition metal oxides (TMOs) provide promising candidates in the context of next‐generation spintronics, despite the severe decay of ferromagnetism as the thickness reduces to the nanometer regime. Here, an efficient strategy to eliminate the magnetic dead layer in atomically thin oxides is presented, by using the epitaxial interface of 3d and 5d oxide monolayers that reconciles both strong exchange interaction and large uniaxial magnetic anisotropy. Combining multiple experimental methods, a ferromagnetic transition in an ultrathin oxide heterostructure comprised of only one La0.2Sr0.8MnO3 monolayer sandwiched by SrIrO3 monolayer (total thickness of three unit‐cells) is unambiguously demonstrated. Remarkably, a largely enhanced saturation magnetization (2 µB Mn−1) and Curie temperature (80 K) are observed for the single manganite monolayer, as compared to previously reported ferromagnetic monolayer oxides. The results demonstrate a general strategy for creating robust ferromagnetism in ultrathin TMOs, potentially enabling novel oxide spin‐orbitronic devices.

Magnetic properties of Pt/Co/Pt trilayers with W insert layer

The results of magnetic investigations of epitaxial trilayers Pt/Co/Pt asymmetrically modified by inserting W layer at the bottom or top Co interfaces in the wide ranges of Co and W layer thicknesses are reported. The samples were epitaxially grown on Pt buffer in double wedge geometry: the dCo thickness gradient of the continuous Co wedge was orthogonal to the dW thickness gradient of non-magnetic W underlayer (overlayer) deposited either as step-like or continuous wedge. Resulting samples have Pt/W/Co/Pt (Pt/Co/W/Pt) stacking sequences. The influence of (dCo, dW) on static magnetization reversal processes were studied using magnetooptical Kerr effect; Brillouin light scattering (BLS) method was applied for dynamical characterization. The magnetic dead layer thickness d0 abruptly increases until dW reaches ∼ 0.5 nm for both orderings. Then its value saturates for Pt/Co/W/Pt, while for Pt/W/Co/Pt samples a slow growth is observed. For dCo corresponding to out-of-plane magnetization the inserting of W layer leads to the strong reduction in coercivity (two orders of magnitude) and transition to in-plane magnetization in the case of Pt/W/Co/Pt ordering, while the Pt/Co/W/Pt samples demonstrates weak changes of coercivity with small change in magnetic anisotropy. The strength of interfacial Dzyaloshinskii-Moriya interaction (iDMI) and spin wave damping for selected dCo thicknesses as a function of dW were derived from BLS measurements. Inserting W with thickness dW ∼ 0.1 nm induces significant iDMI changes, iDMI saturates for dW > 0.4 nm. Our findings demonstrate the efficiency of thin W interlayer on modification of magnetic parameters in Pt/Co/Pt trilayer.

Ultra-thin lithium aluminate spinel ferrite films with perpendicular magnetic anisotropy and low damping

Ultra-thin films of low damping ferromagnetic insulators with perpendicular magnetic anisotropy have been identified as critical to advancing spin-based electronics by significantly reducing the threshold for current-induced magnetization switching while enabling new types of hybrid structures or devices. Here, we have developed a new class of ultra-thin spinel structure Li0.5Al1.0Fe1.5O4 (LAFO) films on MgGa2O4 (MGO) substrates with: 1) perpendicular magnetic anisotropy; 2) low magnetic damping and 3) the absence of degraded or magnetic dead layers. These films have been integrated with epitaxial Pt spin source layers to demonstrate record low magnetization switching currents and high spin-orbit torque efficiencies. These LAFO films on MGO thus combine all of the desirable properties of ferromagnetic insulators with perpendicular magnetic anisotropy, opening new possibilities for spin based electronics.

Hybrid organic/inorganic interface: in situ and ex situ characterization in terms of structure, morphology, electronic and magnetic properties

Organic conjugated molecules are promising media to host spin-polarized carriers, due to their weak spin relaxation mechanisms. Here, we fabricated a metal–hybrid organic–inorganic complex oxide heterostructure made of Fe–Phthalocyanine (FePc): Co(0.5 nm)/FePc(0; 0.5; 1 nm)/La0.67Sr0.33MnO3/SrTiO3 and investigated the interface structure and chemical bonding, and overall magnetic properties. Details about the Co/FePc and FePc/LSMO interfaces were obtained through X-ray photoelectron and absorption characterizations. The combined in-situ and ex-situ magnetic measurements of the heterostructure indicates the contribution of FePc and Co moments to the overall magnetic response. Moreover, these measurements indicate that the LSMO bulk magnetic properties were not canceled out by the surface treatment, but favored the formation of a magnetic dead layer. The hybrid heterostructure presents a modification of the saturation magnetization attributed to the contribution of the molecular layer. The present results are a step forward in the engineering of hybrid organic/inorganic interfaces.

Ta interfaced CoFeB: Role of CoFeB thickness and thermal annealing in modification of structural and magnetic properties

CoFeB interfaced with heavy metals is a potential system for spintronic applications. In the present work, evolution of magnetic and structural properties of CoFeB interfaced with Ta have been studied as function of increasing thickness of magnetic film and increasing annealing temperature. While the evolution of structural properties was investigated using X-ray scattering measurements i.e., X-ray reflectivity (XRR) and grazing incidence X-ray Diffraction (GIXRD), the modification of magnetic properties were studied using vibrating sample magnetometer (VSM) and magneto-optical Kerr effect (MOKE) measurements. The detailed XRR analysis shows the diffusion of Boron to the bottom Ta layer with annealing, which increases significantly for post-crystallized phase. Such enriched B diffusion also increases the thickness of interfacial magnetic dead layer as confirmed from VSM results. The synchrotron XRD show an increased in-plane CoFe grain size relative to out-of-plane grain size, while CoFeB is interfaced with Ta. MOKE measurements confirm the presence of stress-induced uniaxial magnetic anisotropy in as-deposited CoFeB films, which reduces for Ta-interfaced CoFeB. Vacuum annealing well above the crystallization temperature eliminates such magnetic anisotropy with concurrent increase of magnetic coercivity (Hc) because of increasing grain size. CoFeB interfaced with Ta shows an abrupt enhancement of Hc, as compared to CoFeB without Ta interface.

Thickness dependence of magnetic properties of Ir/FeV-based systems

Ir-buffered ${\mathrm{Fe}}_{0.7}{\mathrm{V}}_{0.3}$ (FeV) thin films of variable thickness ($1.4\phantom{\rule{0.28em}{0ex}}\mathrm{nm}\ensuremath{\le}{t}_{\mathrm{FeV}}\ensuremath{\le}10\phantom{\rule{0.28em}{0ex}}\mathrm{nm}$) were sputtered on thermally oxidized Si substrate and capped with Cu or MgO films. Vibrating sample magnetometery measurements allowed deducing their magnetization at saturation and the magnetic dead layer thickness, found to be capping layer independent. Microstrip line ferromagnetic resonance measurements under in-plane and perpendicular to the film plane applied magnetic fields are employed to investigate the perpendicular magnetic anisotropy (PMA) and damping. PMA is found to result from a uniaxial interfacial contribution which is slightly capping layer dependent. In contrast, the second-order PMA constant, which could result from the inhomogeneous distribution and the spatial fluctuations at the nanoscale of the uniaxial PMA at interface, is significantly stronger for Ir/FeV/Cu films. The damping dependence on the inverse of FeV effective thickness revealed a low Gilbert damping constant for FeV $({\ensuremath{\alpha}}_{\mathrm{FeV}}=1.7\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3})$ and allowed concluding that damping enhancement is mainly induced by Ir/FeV. The zero frequency linewidth for in-plane configuration is attributed to two magnon scattering contribution, found to be higher for Cu capped FeV. The investigation of the FeV thickness dependence of interfacial Dzyaloshinskii-Moriya interaction (iDMI) of both systems via Brillouin light scattering allowed to conclude to the zero iDMI constant of FeV/Cu. It also led to deduce iDMI constants of Ir/FeV and FeV/MgO, estimated to be ${D}_{\mathrm{s}}^{\mathrm{Ir}/\mathrm{FeV}}=(0.13\ifmmode\pm\else\textpm\fi{}0.02)\phantom{\rule{0.28em}{0ex}}\mathrm{pJ}/\mathrm{m}$ et ${D}_{s}^{\mathrm{FeV}/\mathrm{MgO}}=(\ensuremath{-}0.07\ifmmode\pm\else\textpm\fi{}0.02)\phantom{\rule{0.28em}{0ex}}\mathrm{pJ}/\mathrm{m}$, respectively.

Spin-torque efficiency enhanced in sputtered topological insulator by interface engineering

The way inter-mixing chemical state influences the damping-torque efficiency of a spin–orbit torque (SOT) heterostructure is a matter of debate. This is because it acts as a local symmetry-breaking that differs from the global symmetry-breaking at the interface. A combination of angle-resolved X-ray photoelectron spectroscopy (AR-XPS), X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) was utilized to investigate the composition-gradient effects on the damping-torque efficiency of the Bi2Se3/insertion (Ta, Pt, Cu)/CoFeB SOT devices, with the insertion to be 0.5 and 1.0 nm. These embedded metals have the advantages of (i) Ta: suppressing CoFeB magnetic dead-layer (ii) Pt: large spin-hall angle (iii) Cu: larger spin-diffusion length. From AR-XPS we observed a sharper composition gradient for Pt-0.5 nm than Pt-1.0 nm in terms of the Se-Pt state. By XAS branching ratio and XMCD sum-rule analyses, we obtained larger spin–orbit coupling (SOC) and spin-polarization (SP) effects on the Pt-0.5, Pt-1.0 nm samples than Cu & Ta insertion. The sharper composition gradient and promoted SOC and SP validate the larger damping-torque efficiency in the Pt-0.5 nm than the Pt-1.0 nm sample. This work manifests interfacial engineering as a powerful avenue for modulating SOT efficiency in spintronic-based applications.

Magnetic Damping and Dzyaloshinskii-Moriya Interactions in Pt/Co2FeAl/MgO Systems Grown on Si and MgO Substrates.

Spin-pumping-induced damping and interfacial Dzyaloshinskii-Moriya interaction (iDMI) have been studied in Pt/Co2FeAl/MgO systems grown on Si or MgO substrates as a function of Pt and Co2FeAl (CFA) thicknesses. For this, we combined vibrating sample magnetometry (VSM), microstrip ferromagnetic resonance (MS-FMR), and Brillouin light scattering (BLS). VSM measurements of the magnetic moment at saturation per unit area revealed the absence of a magnetic dead layer in both systems, with a higher magnetization at saturation obtained for CFA grown on MgO. The key parameters governing the spin-dependent transport through the Pt/CFA interface, including the spin mixing conductance and the spin diffusion length, have been determined from the CFA and the Pt thickness dependence of the damping. BLS has been used to measure the spin wave non-reciprocity via the frequency mismatch between the Stokes and anti-Stokes lines. iDMI has been separated from the contribution of the interface perpendicular anisotropy difference between Pt/CFA and CFA/MgO. Our investigation revealed that both iDMI strength and spin pumping efficiency are higher for CFA-based systems grown on MgO due to its epitaxial growth confirmed by MS-FMR measurements of the in-plane magnetic anisotropy. This suggests that CFA grown on MgO could be a promising material candidate as a spin injection source via spin pumping and for other spintronic applications.

Correlation between interface perpendicular magnetic anisotropy and interfacial Dzyaloshinskii–Moriya interactions in Pt/Pd(t Pd)/Co(t Co)/Au

The interfacial Dzyaloshinskii–Moriya interaction (iDMI) and perpendicular magnetic anisotropy (PMA) can be manipulated via interface engineering. Their strength determines the generation and the size of skyrmions, and the correlation between the iDMI and PMA allows them to be controlled simultaneously, thus choosing the material parameters for which skyrmions can be formed. This opens up the possibility of synthesizing suitable magnetic multilayers that are needed for low-power high-density memory and in logic applications. Vibrating sample magnetometry (VSM), Brillouin light scattering (BLS), and microstrip ferromagnetic resonance (MS-FMR) were used to investigate the correlation between the iDMI and the interface PMA. For this, Pt/Pd(t Pd)Co(t Co)/Au thin film structures with 0 ⩽ t Pd⩽1.2 nm and 1.2 nm ⩽ t Co⩽3 nm were grown by combined sputtering and e-beam evaporation on Si/SiO2 substrates. VSM measurements revealed a negligible magnetic dead layer and a Pd thickness-independent magnetization at saturation of around 1200 emu cm−3. MS-FMR and BLS allowed us to conclue that PMA results from weak volume and interfacial contributions induced by Pd/Co or Pt/Co and Co/Au interfaces. The interface anisotropy constants are found to be 0.65 mJ m−2 and 0.85 mJ m−2 for Pd/Co and for Pt/Co interfaces, respectively. The Pd thickness-dependence of surface iDMI (D s) and PMA (K s) constants follow an exponential decay with a characteristic thickness higher for PMA than the iDMI. The slower decrease of K s vs Pd thickness suggests a shorter range of the iDMI with respect to PMA and points out a strongly localized origin for the iDMI. This difference between the iDMI and PMA is most likely responsible for the nonlinear correlation between PMA and iDMI constants. The investigation of the Co thickness-dependence of the iDMI and PMA in Pd/Co/MgO/Ta systems allows us to conclude a zero iDMI constant of Co/Au and to determine the iDMI constants of Pd/Co and Co/MgO, estimated to be D s Pd/Co = −0.096 pJ m−1 and D s Co/MgO = −0.15 pJ m−1, respectively. The criterion of skyrmions stability, applied for our samples, revealed the possibility of the existence of stable skyrmions in some samples.

Strong perpendicular magnetic anisotropy of Pt/Co/AlN structure

In this study, the perpendicular magnetic anisotropy (PMA) and microstructure of Pt/Co/AlN stacks were investigated. At a Co thickness of 0.5 nm, the magnetic moment was not observed in the as-deposited state, but after annealing, it increased significantly. Furthermore, a strong PMA was obtained in the annealed samples; after annealing at 300 °C and 400 °C, the effective PMA energy densities were 2.28 and 1.96 × 107 erg/cm3, respectively. Similar behavior was observed for samples with thicker Co layers. The magnetic dead layer and interfacial PMA energy density were also investigated to determine the interfacial effects on PMA. The occurrence of strong PMA was supported by high-resolution cross-sectional transmission electron microscopy results, demonstrating a well-defined layered structure for the annealed Pt/Co/AlN samples.

Significant Reduction of the Dead Layers by the Strain Release in La0.7Sr0.3MnO3 Heterostructures.

Great efforts have been devoted to exploring the emergent phenomena occurring in heterostructures of correlated oxides. However, the presence of both magnetic and electrical dead layers in functional oxide films generally obstructs the device functionalization and miniaturization. Here, we demonstrate an effective strategy to significantly reduce the thickness of dead layers in a prototypical correlated oxide system, La0.7Sr0.3MnO3 (LSMO) grown on LaAlO3 (LAO) substrates, via strain engineering by inserting a Sr3Al2O6 buffer layer with a different thickness at heterointerfaces. In this way, the thicknesses of the magnetic and electrical dead layers of LSMO films on the LAO substrates notably decrease from 8 to 4 unit cells and from 13 to 9 unit cells, respectively. Our results provide a convenient method to minimize or even eliminate the dead layers of correlated oxides through the interfacial strain engineering, which has potential applications in nanoscale oxide spintronic devices.

Investigation of perpendicular magnetic anisotropy in Pt/Co20Fe60B20/Pt multi-layer structures

Multi-layers of Co20Fe60B20 and Pt with large perpendicular magnetic anisotropies (PMA), comparable to those obtained with the more widely utilized Ta/CoFeB/MgO heterostructures, are reported. CoFeB thickness of approximately 0.8nm is necessary to maximize PMA in Pt/CoFeB/Pt. Strong PMA can only be obtained upon careful tuning of the material the CoFeB layer is deposited on. Specifically, a Pt layer thickness of at least 3nm is necessary to obtain PMA in CoFeB due to the emergence of (111) texture in thicker Pt films. The absence of a magnetic dead layer at the interface between CoFeB and Pt (as opposed to an interface between CoFeB and Ta) maximizes the amount of magnetic content per unit volume. Furthermore, this study investigates the magnetic properties of multi-layer structures where four CoFeB layers are deposited between Pt and Pt/Ta/Pt buffers. While the out-of-plane remanent magnetization of the structures is low, they present small nucleation field down to 30Oe and large anisotropy energy in the range of 106erg/cc.

Growth of ultra-thin Cobalt on fullerene (C60) thin-film: in-situ investigation under UHV conditions

With the advent of organic spintronics, material such as fullerene (C60) is drawing immense attention due to the long spin relaxation time. C60 based spin valve structures are always challenging due to the complicated structure at the interfaces of metal (cathode) and C60. In the present work, the growth of e-beam evaporated Co films on the C60 layer has been studied in-situ, starting from a fraction of nanometer to tens of nanometers, using reflection high energy electron diffraction (RHEED), electron transport (ET) and magneto-optic Kerr effect (MOKE) measurements. While RHEED and ET provided information about structure and film morphology, in-situ MOKE provided information about magnetic properties, thus making it possible to correlate the evolution of magnetic properties with that of structure and morphology of the Co thin film. The film grows via island growth, where small isolated islands grow larger to connect with other islands and eventually combine into a continuous film at around 75 Å thickness. Combined analysis of Kerr intensity and resistivity variation with Co thickness revealed the origin of the 23 Å thick magnetic dead layer at the interface, which is attributed to the formation of small clusters with paramagnetic or superparamagnetic properties.

Interface magnetism in Fe/Alq3 bilayer; interface resolved nuclear resonance scattering studies

This work provides a better understanding and behavior of the metal–organic interface magnetism, which plays a crucial role in organic spin-valve devices. Interface magnetism and topological structure of Fe on organic semiconductor film Tris(8-hydroxyquinolinato) aluminium (Alq3) have been studied and compared with Fe film deposited directly on Si (100) substrate. To get information of the diffused Fe layer at the Fe/ Alq3 interface, grazing incident nuclear resonance scattering (GINRS) measurements are made depth selective by introducing a 95% enriched thin 57Fe layer at the interface and producing x-ray standing wave within the layered structure. Compared with Fe growth on Si substrate, where film exhibits a hyperfine field value of ∼ 32 T (Bulk Fe), a thick Fe- Alq3 interface has been found with reduced electron density and hyperfine fields providing evidence of deep penetration of Fe atoms into Alq3 film. Due to the soft nature of Alq3, Fe moments relax in the film plane. At the same time, Fe on Si has resultant ∼ 43° out of plane orientation of Fe moments at the interface due to stressed and rough Fe layer near Si. Evolution of magnetism at Fe-Alq3 Interface is monitored using in-situ magneto-optical Kerr effect (MOKE) during growth of Fe on Alq3 surface and small-angle x-ray scattering (SAXS) measurements. It is found that the Fe atom tries to organize into clusters to minimize their surface/interface energy. The origin of the 24 Å thick magnetic dead layer at the interface is attributed to the small Fe clusters of paramagnetic or superparamagnetic nature. Present work provides an understanding of interfacial magnetism at metal–organic interfaces and the topological study using the GI-NRS technique, which is made depth selective to probe magnetism of the diffused ferromagnetic layer, which is otherwise difficult for lab-based techniques.

Design and fabrication of Co2FeSi/Pt multilayers with perpendicular magnetic anisotropy

A series of multilayers consisting of Co2FeSi (CFS) and Pt are sputtered. Perpendicular magnetic anisotropy (PMA) is demonstrated in the CFS/Pt multilayers with CFS thickness in the range of 0.4 ∼ 1.0 nm. The individual thicknesses of Pt spacer and Co2FeSi layer as well as interface numbers are shown to strongly affect PMA. Two-step switching is observed in the multilayers with 8 nm Pt spacer, showing typically decoupled feature. The effective perpendicular anisotropy energy is determined to be in the order of 106 erg/cm3. The interfacial perpendicular anisotropy energy density is estimated to be 0.32 erg/cm2. The magnetic reversal with multi-domain feature is observed with increasing interface number. Sufficiently large saturation magnetization is derived from the multilayers with various repetitions. The thickness of magnetic dead layer is found to increase with the number of interface, which may be ascribed to more interdiffusion occurring at the multi-interfaces. Our results provide some useful information for the design and development of spintronic devices based on CFS/Pt multilayers.

Annealing Temperature and Thickness Dependencies of Perpendicular Magnetic Anisotropy and Dzyaloshinskii– Moriya Interaction of Pt/Co/MgO Thin Films

Effects of the ferromagnetic layer thickness and annealing temperature were studied in Pt-/Co-/MgO-based systems grown on thermally oxidized Si substrates using magnetron sputtering system. The Co thicknesses were varied in the range of 1–6 nm and the samples were annealed <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ex situ</i> at 200 °C, 300 °C, and 400 °C. Vibrating sample magnetometry was used to determine the magnetization at saturation and the magnetic dead layer thickness that were found to be insignificantly affected by the annealing. Brillouin light scattering, in Damon–Eshbach configuration, was used to measure the thermally excited spin wave (SW) frequencies versus the in-plane applied magnetic field and the SW vector which were used to investigate the perpendicular magnetic anisotropy (PMA) and interfacial Dzyaloshinskii–Moriya interaction (iDMI), respectively. The Co effective thickness dependence of the effective magnetization ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$M_{\mathrm {eff}}$ </tex-math></inline-formula> ), which provides information on the PMA constants, shows the existence of two linear regimes with different slopes due to misfit strain-induced magnetoelastic anisotropy contributions to volume and surface terms. The volume magnetocrystalline anisotropy constant increases monotonously with annealing temperature, whereas the pure surface (Néel type) constant increases with annealing up to 300 °C and degrades at 400 °C. The surface iDMI constant decreases with increasing annealing temperature and no obvious correlation with interface PMA constant has been found, suggesting different interfaces contribution to PMA and iDMI.