NMR Study of Antiferromagnet UPtGa5
NMR Study of Antiferromagnet UPtGa5
复制标题
反铁磁体 UPtGa5 的核磁共振研究
DOI:
10.1143/jpsjs.75s.127
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发表时间:
2006
影响因子:
1.7
通讯作者:
Ōnuki Yoshichika
中科院分区:
文献类型:
--
作者:
Kambe Shinsaku;Sakai Hironori;Tokunaga Yo;Fujimoto Tatsuya;Kato Harukazu;E. Russell;Ikeda Shugo;D. Tatsuma;Haga Yoshinori;Ōnuki Yoshichika
We report spin–lattice relaxation time ( T 1 ) measurements at Ga and Pt sites in a single crystal sample of an itinerant antiferromagnet UPtGa 5 ( T N =27 K). In the paramagnetic state at high temperatures, the T -dependence of static susceptibility and 1/ T 1 T at Ga and Pt sites shows a similar behavior, indicating the dynamical susceptibility \textImχ( q ,ω) has no strong q -dependence at high temperatures. This behavior suggests a localized character of this compound at high temperatures. Around T N , 1/ T 1 T at Ga site increases rapidly due to critical slowing down behavior, in contrast a saturation behavior is observed at Pt site as the antiferromagnetic fluctuation cancels at Pt site. The characteristic spin fluctuation energy Γ is estimated using T 1 and previously obtained hyperfine parameters.
DOI:
--
发表时间:
2005
期刊:
J. Phys. Soc. Jpn. 74
影响因子:
--
作者:
O.Sakai;et al.;S.Kambe et al.;H.Sakai et al.
通讯作者:
H.Sakai et al.
DOI:
--
发表时间:
2003
期刊:
Phys.Rev.B 68
影响因子:
--
作者:
小川佳子;栗田敬;K.Kaneko et al.
通讯作者:
K.Kaneko et al.