Magnetic Ground-State of Perovskite PbVO3 with Large Tetragonal Distortion

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• 作者：Kengo Oka ; Ikuya Yamada ; Masaki Azuma ; Soshi Takeshita ; Kohki H. Satoh ; Akihiro Koda ; Ryosuke Kadono ; Mikio Takano ; Yuichi Shimakawa
• 刊名：Inorganic Chemistry
• 出版年：2008
• 出版时间：August 18, 2008
• 年：2008
• 卷：47
• 期：16
• 页码：7355-7359
• 全文大小：216K
• 年卷期：v.47,no.16(August 18, 2008)
• ISSN：1520-510X

文摘

The magnetic properties of PbVO₃, a PbTiO₃-type perovskite with a large tetragonal distortion (c/a = 1.229), were investigated. The temperature dependence of the measured magnetization of multidomain single-crystal samples showed a broad maximum centered around 180 K, indicating a two-dimensional antiferromagnetism. μSR measurement revealed the presence of a long-range order below 43 K. The two-dimensional magnetism is due to the ordering of d_xy orbitals, which is thought to also be related to the large tetragonal distortion of PbVO₃.