Uniaxial anisotropy and its manipulation in amorphous Co68Fe24Zr8 thin films (invited)

Abstract

An algorithm to extract effective magnetic parameters of thin film with in-plane uniaxial magnetic anisotropy J. Appl. Phys. 107, 09C507 (2010); 10.1063/1.3357325Pulsed laser ablation deposition of nanocrystalline exchange-coupled Ni 11 Co 11 Fe 67 − x Zr 7 B 4 Cu x ( x = 0 , 1 ) films for planar inductor applicationsWe have proven that the growth of Co 68 Fe 24 Zr 8 layers under external field yields a uniaxial anisotropy, defined by the direction of the field. No magnetic coupling is present between Co 68 Fe 24 Zr 8 layers when separated by a 3 nm of Al 70 Zr 30 . The anisotropy axis can therefore be manipulated at will and the direction can be tailored, layer by layer in multilayers, by the choice of the direction of the applied field during growth. The g-factor (2.13) and the anisotropy constant, obtained from ferromagnetic resonance, support the existence of short-range order. The relation between the temperature dependences of magnetic anisotropy and magnetization are partially captured by Callen-Callen power law. V C 2014 AIP Publishing LLC. [http://dx.

Evidence of a perpendicular magnetocrystalline anisotropy in aMn5Ge3epitaxial thin film revealed by ferromagnetic resonance

“…5. In ferromagnets, the magnetocrystalline anisotropy usually decreases much faster than the magnetization when the temperature increases, with exponents equal to 10 or 21 for cubic anisotropies and 3 for uniaxial anisotropy [31][32][33][34][35]. In our case, the perpendicular anisotropy energy still decreases faster than the magnetization but at a slower pace than what can be found in literature.…”

Anisotropy and Domain Structure in Nanoscale-Thick MoS2/CoFeB Heterostructures: Implications for Transition Metal Dichalcogenide-Based Thin Films

“…Therefore, the large value of g here indicates that the magnetic moment has a stronger contribution from orbital than that of spin. Such strong orbital contribution is inevitable in the case of amorphous ferromagnets where the quenching of orbital moment is quite low due to lack of long-range atomic ordering and hence the crystal field . It is found that with increase in thickness of MoS 2 , the value of H K increases whereas the value of Δ H 0 decreases.…”

Creation of a thermally assisted skyrmion lattice in Pt/Co/Ta multilayer films

“…, D is the DMI constant, A is the exchange stiffness and eff K is the effective perpendicular anisotropy. Since the values of D and A are intrinsic properties of the materials and do not change with temperature, an effective method to increase the parameterκ is to decrease K eff [39][40][41][42] . To achieve this goal, one can increase the sample temperature, because the anisotropy constant of magnetic materials decreases with increasing temperature.…”