Nuclear Magnetic Resonance Study of the Easy Axis of Magnetization in Manganese Bismuthide
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概要
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The zero-field NMR of Mn^<55> in ferromagnetic MnBi has been observed in the temperature range 4.2°K to 500°K. Resonance signals from nuclei in the domain and domain wall are separately observed at 225.01 MHz, and 206 MHz, respectively, at 294°K. As the temperature is decreased, the quadrupole splitting and the frequency of the central line for the domain signal decrease gradually below 142°K and a temperature somewhat lower than 142°K, respectively, and change abruptly at 90°K. These results snow that below 142°K the magnetic moment deviates gradually from the c-axis and flops into the c-plane at 90°K. The temperature dependence of the NMR intensity has also been observed, from which a qualitative temperature variation of the anisotropy constant K_1 has been obtained. The hyperfine field and e^2qQ/h extrapolated to 0°K are -224.5 kOe and 14.0 MHz, respectively.
- 社団法人日本物理学会の論文
- 1970-08-05
著者
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HIHARA Tadamiki
Department of Physics, Faculty of Science, Tohoku University
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KOI Yoshitaka
Department of Physics,Faculty of Sciences,Tohoku University
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Hihara Tadamiki
Department Of Physics And Department Of Electrical Engineering Tohoku University
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Koi Yoshitaka
Department Of Physics And Department Of Electrical Engineering Tohoku University
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Koi Yoshitaka
Department Of Physics Faculty Of Science Tohoku University
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