Anomalous lattice distortion in Pr-substituted double-layered perovskite manganite La1.2Sr1.8Mn2O7 single crystals

被引：20

作者：

Ogasawara, H ^{[1
]}

Matsukawa, M

Hatakeyama, S

Yoshizawa, M

Apostu, M

Suryanarayanan, R

Dhalenne, G

Revcolevschi, A

Itoh, K

Kobayashi, N

机构：

[1] Iwate Univ, Dept Mat Sci & Engn, Morioka, Iwate 0208551, Japan

[2] Univ Paris 11, CNRS, UMR 8648, Lab Physicochim Etat Solide, F-91405 Orsay, France

[3] Natl Res Inst Met, Tsukuba, Ibaraki 3050003, Japan

[4] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2000年 / 69卷 / 05期

关键词：

double-layered perovskite manganite; colossal magnetoresistance; giant magnetostriction; Pr substitution;

D O I：

10.1143/JPSJ.69.1274

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thermal expansion and magnetostriction both in the ab-plane and along the c-axis of double-layered perovskite manganite (La1-xPrx)(1.2)Sr1.8Mn2O7 (z = 0 and 0.2) single crystals have been measured as a function of temperature and magnetic field. The magnitude and the sign of the lattice striction were strongly influenced by Pr substitution. A large magnetostriction was found to accompany the colossal magnetoresistance. The findings are attributed to the e(g)-electron orbital degrees of freedom.

引用

页码：1274 / 1277

页数：4

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