Itaru Maekawa, F. Takagi, K. Kaneda, Y. Sakai, N. Tsuda
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引用次数: 2
摘要
在90 ~ 300 K范围内测定了掺5% V的Li 1+ x Ti 2- x o4的磁化率。将其作为主晶格和解析V的和来分析，V的磁化率符合居里-魏斯定律。有效玻尔磁子数为2.4 ~ 2.8/V, Weiss温度低至20 K。他们认为双极化子态不会出现在主晶格中。为了解释宿主晶格几乎与温度无关的顺磁性，提出了局部扩展电子轨道的自旋简并。
Magnetic Susceptibility of Li 1+ x Ti 2− x O 4 Doped with Vanadium
Magnetic susceptibility of Li 1+ x Ti 2- x O 4 doped with V by 5% was measured from 90 to 300 K. It was analyzed as a sum of those of the host lattice and the resolved V. The susceptibility of V obeys the Curie-Weiss law. The effective Bohr magneton number is 2.4–2.8/V and the Weiss temperature is as low as 20 K. They suggest that the bipolaron state does not appear in the host lattice. To explain the nearly temperature independent paramagnetism of the host lattice, spin degeneracy of locally extended electron orbitals was proposed.
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