X-ray-induced structural transition in La0.875Sr0.125MnO3

被引：43

作者：

Kiryukhin, V ^{[1
]}

Wang, YJ ^{[1
]}

Chou, FC ^{[1
]}

Kastner, MA ^{[1
]}

Birgeneau, RJ ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.59.R6581

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a synchrotron x-ray-scattering study of the magnetoresistive manganite La0.875Sr0.125MnO3. At low temperatures, this material undergoes an x-ray-induced structural transition at which charge ordering of Mn3+ and Mn4+ ions characteristic to the low-temperature stare of this compound is destroyed. The transition is persistent but the charge-ordered state can be restored by heating above the charge-ordering transition temperature and subsequently cooling. The charge-ordering diffraction peaks, which are broadened at all temperatures, broaden more upon x-ray irradiation, indicating the finite correlation length of the charge-ordered state. Together with the recent reports on x-ray-induced transitions in Pr1-xCaxMnO3, our results demonstrate that the photoinduced structural change is a common property of the charge-ordered perovskite manganites. [S0163-1829(99)51110-7].

引用

页码：R6581 / R6584

页数：4

共 13 条

[1]

CASA D, CONDMAT9809242

[2] Structural changes, clustering, and photoinduced phase segregation in Pr0.7Ca0.3MnO3 [J].