Effects of Interface Roughness and Lattice Strain on Perpendicular Magnetic Anisotropy in Co/Pd Multilayer

2013 ◽  
Vol 534 ◽  
pp. 7-11 ◽  
Author(s):  
Naoto Go ◽  
Kosuke Suzuki ◽  
Shun Emoto ◽  
Masayoshi Itou ◽  
Yoshiharu Sakurai ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Molecular Beam ◽  
Lattice Strain ◽  
Occupation Number ◽  
Rf Sputtering ◽  
Perpendicular Magnetic Anisotropy ◽  
Interface Roughness ◽  
Magnetic Quantum Number ◽  
Rough Interface ◽  
Number Ratio

The effects of strain and interface roughness at the Co/Pd interface are investigated from the viewpoint of perpendicular magnetic anisotropy (PMA) using the DV-Xα cluster model calculation method. It is found that spin projected occupation number ratio of magnetic quantum number |m| = 2 for the Co 3d electrons enhances by expanding the lattice within a close-packed plane of fcc stacking and, hence, enhances the PMA. Rough interface decreases the spin projected occupation number ratio of |m| = 2 and, hence, decreases the PMA. These results explain the PMA properties of Co/Pd multilayers fabricated using molecular beam epitaxy (MBE) technique and RF sputtering techniques.

Perpendicular magnetic anisotropy in CoxPd1−xalloy films grown by molecular beam epitaxy

1994 ◽  
Vol 75 (10) ◽  
pp. 6412-6414 ◽  
Author(s):  
J. R. Childress ◽  
J. L. Duvail ◽  
S. Jasmin ◽  
A. Barthélémy ◽  
A. Fert ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Magnetic Anisotropy ◽  
Molecular Beam ◽  
Perpendicular Magnetic Anisotropy

Perpendicular Magnetic Anisotropy of Pd/Co and Related Multilayers

1991 ◽  
Vol 231 ◽  
Author(s):  
S. Tsunashima ◽  
K. Nakamura ◽  
H. Takahashi ◽  
S. Fukatsu ◽  
S. Uchiyama
Keyword(s):  
Magnetic Anisotropy ◽  
Noble Metal ◽  
Crystal Orientation ◽  
Rf Sputtering ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films ◽  
Surface Anisotropy ◽  
View Point ◽  
Magnetoelastic Energy ◽  
Magnetoelastic Surface

AbstractMultilayer films consists of noble metal (Pd, Pt, Cu, Au, PdSi) and transition metal(Co, Ni, PdCo, PtCo, CoZr) layers were prepared by rf sputtering method on glass and/or MgO single crystal substrates. The perpendicular magnetic anisotropy was examined in relation to the magnetostriction, lattice misfits, crystallinity and crystal orientations. The results suggest that the perpendicular magnetic anisotropy in noble metal/PdCo alloy multilayers originates from the magnetoelastic energy of the PdCo layers under a stress due to the lattice misfits. In both Pd/Co and Pd/Ni multilayers, the anisotropy was found to depend on the crystal orientation, and the dependence is discussed from the view point of the magnetoelastic surface anisotropy.

scholarly journals Perpendicular Magnetic Anisotropy and Spin Glass-like Behavior in Molecular Beam Epitaxy Grown Chromium Telluride Thin Films

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 3772-3779 ◽  
Author(s):  
Anupam Roy ◽  
Samaresh Guchhait ◽  
Rik Dey ◽  
Tanmoy Pramanik ◽  
Cheng-Chih Hsieh ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Beam Epitaxy ◽  
Magnetic Anisotropy ◽  
Spin Glass ◽  
Molecular Beam ◽  
Perpendicular Magnetic Anisotropy

scholarly journals Effects of overlayer capping and lattice strain on perpendicular magnetic anisotropy of TM|FePt|MgO heterostructures

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Xiaocui Han ◽  
Hong Cui ◽  
Bo Liu ◽  
Cunling Tian ◽  
Junzhong Wang ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Lattice Strain ◽  
Perpendicular Magnetic Anisotropy

Observation of Magnetic Compton Profile of Interface Controlled Co/Pd Multilayer

2011 ◽  
Vol 497 ◽  
pp. 8-12 ◽  
Author(s):  
Kosuke Suzuki ◽  
Naoto Go ◽  
Shun Emoto ◽  
Ryutaro Yamaki ◽  
Masayoshi Itou ◽  
...  
Keyword(s):  
Wave Function ◽  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Anisotropy Energy ◽  
Compton Profile ◽  
Rough Interface ◽  
Magnetic Anisotropy Energy ◽  
Smooth Interface ◽  
Rough Interfaces

We compare two Co/Pd multilayers with correspondingly smooth and rough interfaces. The first is a Co (1.5 nm)/Pd (2.6 nm) multilayer with a smooth interface deposited by the MBE technique, and the second is a Co (1.6 nm)/Pd (4.0 nm) multilayer with a rough interface deposited by the sputter technique. Both multilayers have almost the same perpendicular magnetic anisotropy energy, 1.15 Merg/cc for the Co (1.5 nm)/Pd (2.6 nm) multilayer and 1.20 Merg/cc for the Co (1.6 nm)/Pd (4.0 nm) multilayer, respectively. The symmetry of the wave function, which is measured using the magnetic Compton profile, is almost the same for both multilayers. This suggests that the smooth interface controls the wave function and enhances the PMA energy even if the Co/Pd multilayer has a thinner Pd layer.

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