Surface Anisotropy in Epitaxial FE(110)/MO(110) Multilayers

1995 ◽  
Vol 384 ◽  
Author(s):  
R.M. Osgood ◽  
R.L. White ◽  
B.M. Clemens
Keyword(s):  
Domain Structure ◽  
Uniaxial Anisotropy ◽  
Transverse Component ◽  
Sputter Deposition ◽  
Recording Media ◽  
Surface Anisotropy ◽  
Magneto Optic

ABSTRACTWe have prepared epitaxial Fe(110)/Mo(110) multilayers by sputter deposition. These films exhibit a large uniaxial anisotropy and may be attractive as islanded in-plane recording media. The large uniaxial anisotropy is due to the intrinsic surface anisotropy of the Fe(110)/Mo(110) interface, which is of the same magnitude as the surface anistropy of the Fe(110)/W(110) interface but has a different sign (the surface anisotropy of the Fe(110)/Mo(110) interface prefers the [001] axis of magnetization). The magnetoelastic component of the anisotropy is not large. A novel magneto-optic technique was used to measure the transverse component of the magnetization and deduce information about the anisotropy and domain structure of the multilayers.

Grain separation enhanced magnetic coercivity in Pt/Co multilayers.

1993 ◽  
Vol 51 ◽  
pp. 1038-1039 ◽  
Author(s):  
G.A. Bertero ◽  
R. Sinclair
Keyword(s):  
Remanent Magnetization ◽  
Strong Influence ◽  
Uniaxial Anisotropy ◽  
Magnetic Coupling ◽  
Recording Media ◽  
Magnetic Media ◽  
Signal To Noise ◽  
Out Of Plane ◽  
Longitudinal Recording ◽  
The Relationship

Pt/Co multilayers displaying perpendicular (out-of-plane) magnetic anisotropy and 100% perpendicular remanent magnetization are strong candidates as magnetic media for the next generation of magneto-optic recording devices. The magnetic coercivity, Hc, and uniaxial anisotropy energy, Ku, are two important materials parameters, among others, in the quest to achieving higher recording densities with acceptable signal to noise ratios (SNR). The relationship between Ku and Hc in these films is not a simple one since features such as grain boundaries, for example, can have a strong influence on Hc but affect Ku only in a secondary manner. In this regard grain boundary separation provides a way to minimize the grain-to-grain magnetic coupling which is known to result in larger coercivities and improved SNR as has been discussed extensively in the literature for conventional longitudinal recording media.We present here results from the deposition of two Pt/Co/Tb multilayers (A and B) which show significant differences in their coercive fields.

scholarly journals Domain structure and magnetisation processes in magneto-optic Co/Pt thin films

1996 ◽  
Vol 32 (5) ◽  
pp. 4070-4072 ◽  
Author(s):  
G.N. Phillips ◽  
K. O'Grady ◽  
Q. Meng ◽  
J.C. Lodder
Keyword(s):  
Thin Films ◽  
Domain Structure ◽  
Magneto Optic

Analysis of the magnetization switching in recording media thin films by magneto-optic Kerr effect vector magnetometry

2003 ◽  
Vol 433 (1-2) ◽  
pp. 259-262 ◽  
Author(s):  
G. Bottoni ◽  
D. Candolfo ◽  
A. Cecchetti ◽  
P. Vavassori
Keyword(s):  
Thin Films ◽  
Kerr Effect ◽  
Recording Media ◽  
Magnetization Switching ◽  
Magneto Optic

Structural Properties of Anisotropic PtCo(001) and PtFe(001) Thin Films on MgO(001)

1993 ◽  
Vol 311 ◽  
Author(s):  
Bruce M. Lairson ◽  
Mark R. Visokay ◽  
Sean B. Brennan ◽  
Robert Sinclair ◽  
Bruce M. Clemens
Keyword(s):  
Structural Properties ◽  
Perpendicular Magnetic Anisotropy ◽  
Film Plane ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Axis Orientation ◽  
Superlattice Structure ◽  
Natural Superlattice ◽  
Epitaxial Multilayers ◽  
Magneto Optic

ABSTRACTWe report structural properties of PtFe and PtCo intermetallic compounds with perpendicular magnetic anisotropy and a preferred c-axis orientation perpendicular to the film plane, formed from initially epitaxial multilayers. These materials represent particular cases of a more general class of anisotropic magnetic compounds with the CuAu(1) natural superlattice structure. They possess high magneto-optic Kerr rotations and magnetizations, suggesting them as likely candidates for magneto-optic and perpendicular magnetic recording media.

Domain Structures in Films with Combined Magnetic Anisotropy. Two-Dimensional Simulation

2014 ◽  
Vol 215 ◽  
pp. 409-414 ◽  
Author(s):  
Mikhail N. Dubovik ◽  
Vladimir V. Zverev ◽  
Boris N. Filippov
Keyword(s):  
Magnetic Anisotropy ◽  
Thick Film ◽  
Domain Structure ◽  
Uniaxial Anisotropy ◽  
Anisotropy Constant ◽  
Two Dimensional ◽  
Structure Dependence ◽  
Domain Structures ◽  
New Type ◽  
Dimensional Simulation

The domain structure dependence on the uniaxial anisotropy constant has been considered in a micrometer-thick film by means of the two-dimensional micromagnetic simulation. The film has both uniaxial and tetra-axial magnetic anisotropies. The new type domain structures and walls caused by the tetra-axial anisotropy presence are predicted.

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