Spin Waves in a Spin-Pair System and in a System of Magnetic Ions with Large Anisotropy Energy
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概要
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It has recently been shown, by using a molecular field theory, that in these systems a new type of spin ordering occurs under external magnetic fields. In the present paper, the physical properties of these systems at low temperatures are investigated on the basis of spin wave theory. In the ordered state, the spin wave frequency is proportional to the wave number when it is small, and the proportionality coefficient is strongly dependent on the intensity of external field. The field dependence of spin temperature in adiabatic magnetization process is modified from that obtained by the molecular field theory.
- 社団法人日本物理学会の論文
- 1970-09-05
著者
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Tachiki Masashi
The Research Institute For Iron Steel And Other Metals
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YAMADA Takemi
The Research Institute for Iron, Steel and Other Metals
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TACHIKI Masashi
Research Institute for Iron, Steel and Other Metals, Tohoku University
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YAMADA Takemi
Research Institute for Iron, Steel and Other Metals, Tohoku University
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MAEKAWA Sadamichi
Research Institute for Iron, Steel and Other Metals, Tohoku University
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Maekawa Sadamichi
The Research Institute For Iron Steel And Other Metals
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