NMR study of local magnetic and electronic properties of vanadium bronzes
NMR study of local magnetic and electronic properties of vanadium bronzes
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钒青铜局部磁电性能的核磁共振研究
DOI：
10.1016/s0022-3697(00)00162-1
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发表时间：
2001
影响因子：
4
通讯作者：
Y. Ueda
中科院分区：
文献类型：
--
作者：
M. Itoh;Nobuyuki Akimoto;Hiroyuki Yamada;M. Isobe;Y. Ueda
用51V核磁共振实验研究了钒氧化物青铜β-AV6015(A=Na和Ca)的局域磁性和电学性质。我们观察到，由于这两种氧化物的电荷有序转变，51V核磁共振谱发生了剧烈的变化。NaV_6O_(15)的基态为反铁磁有序态，而CaV_6O_(15)的基态为非磁性。这与V4+离子的数密度和电荷有序结构密切相关。
51V NMR experiments have been performed to study the local magnetic and electronic properties of the vanadium oxide bronzes β-AV6O15(A=Na and Ca). We observed a drastic change in the51V NMR spectrum due to a charge-ordering transition in both oxides. The ground state of NaV6O15is found to be an antiferromagnetically ordered state, whereas that of CaV6O15is nonmagnetic. This is closely related with the number density of V4+ions and the structure of the charge ordering.