强磁性體 磁氣異方性 에너지의 溫度依存性에 관한 考察 = Temperature Dependence of Ferromagnetic Anisotropy Energy

다국어 초록 (Multilingual Abstract)

On the basis of Zener's tenth power law which is derived from the nearst-neighbor quadrupole -quadrupole coupling theory and carr's analysis about the temperature dependence of ferromagnetic anisotropy, temperature dependence of ferromagnetic cubic crystal anisotropy energy is studied.
Two theories of Zener and Van Vleck seem to be Contradictory, but it is shown that these theories are the same physical picture of statistical thermal fluctuations of anisotropically-coupled neighbor spins.
Ven Vleck's calculation is somewhat cumbersome but Zener's approach is very direct and simple.
Zener's theory is more useful than Van Vleck's theory at all the temperatures range, because most of anisotropy is vanished before sufficiently high temperatures are reached for Van Vleck's theory to be appropriate.