Electrical and magnetic properties of LnOZnPn (Ln = rare earths; Pn = P, As, Sb)

被引：34

作者：

Takano, Yoshiki ^{[1
]}

Kornatsuzaki, Satoshi ^{[1
]}

Komasaki, Hiroyuki ^{[1
]}

Watanabe, Tadataka ^{[1
]}

Takahashi, Yumiko ^{[1
]}

Takase, Kouichi ^{[1
]}

机构：

[1] Nihon Univ, Coll Sci & Technol, Dept Phys, Chiyoda Ku, Tokyo 1018308, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 451卷 / 1-2期

关键词：

rare earth; magnetic properties; pnictide; layered compound;

D O I：

10.1016/j.jallcom.2007.04.203

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrical and magnetic properties of oxypnictides LnOZnPn (Ln = rare earths, Pn = pnictogen elements) with a ZrCuSiAs structure are investigated. The electrical resistivity of LnOZnPn decreases with an atomic number of Pn. The electrical resistivity has a maximum at Ln = Ce and then decreases with an atomic number of Ln in LnOZnAs, and it decreases with an atomic number of Ln in LnOZnSb. While LnOZnPn (Ln = La, Ce, Pr, Pn = P, As) are semiconducting, LnOZnSb (Ln = La, Ce) show a metal-semiconductor transition and NdOZnPn (Pn = As, Sb) become metallic. While LaOZnPn shows a diamagnetism, other LnOZnPn are paramagnetic. The effective magnetic moment mu(eff) deviates from the trivalent free ion values with an atomic number of Pn and Ln. The correlation between the deviation of mu(eff) and the decrease of the electrical resistivity suggests that 4f electrons contribute to the electrical conduction. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：467 / 469

页数：3

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