scholarly journals The eigenvalues of quantized spin waves and theeffect of the uniaxial anisotropy

2011 ◽  
Vol 60 (5) ◽  
pp. 056805
Author(s):  
Hou Xiao-Juan ◽  
Yun Guo-Hong ◽  
Bai Yu-Hao ◽  
Bai Narsu ◽  
Zhou Wen-Ping
Keyword(s):  
Spin Waves ◽  
Uniaxial Anisotropy

The energy bands of quantized spin waves and the uniaxial anisotropy in a biferromagnetic system

2010 ◽  
Vol 78 (1) ◽  
pp. 111-117
Author(s):  
X. J. Hou ◽  
G. H. Yun ◽  
Y. H. Bai ◽  
N. Bai ◽  
W. P. Zhou
Keyword(s):  
Spin Waves ◽  
Uniaxial Anisotropy ◽  
Energy Bands

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.

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