Observation of 55Mn NMR and NQR Signals from Site II in β Mn Metal
Observation of 55Mn NMR and NQR Signals from Site II in β Mn Metal
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β Mn 金属位点 II 的 55Mn NMR 和 NQR 信号观察
DOI：
10.1143/jpsj.62.447
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
T. Kohara
中科院分区：
文献类型：
--
作者：
Y. Kohori;Yukihiro Noguchi;T. Kohara
观察了55mn在II位的NMR和NQR信号。电四极耦合常数和不对称参数分别为e2 q q / h =30 MHz和η ～ 0。核自旋晶格弛豫速率1/ t1与\(\sqrt {T}\)成正比，表明β Mn是一个T N ～ 0 K的流动反铁磁体系。位置II的1/ t1值约为位置I的20倍，位置II的Mn电子态比位置I更具磁性。
NMR and NQR signals of 55 Mn in site II were observed. The electric quadrupole coupling constant and the asymmetry parameter were estimated to be e 2 q Q / h =30 MHz and η∼0, respectively. The nuclear spin lattice relaxation rate, 1/ T 1 , is proportional to \(\sqrt {T}\), which indicates β Mn to be an itinerant antiferromagnetic system with T N ∼0 K. The value of 1/ T 1 at site II is about 20 times larger than the value at site I. The electronic state of Mn at site II is more magnetic than that at site I.