Pressure dependence of the lattice distortion in perovskite La0.5-xBixCa0.5MnO3 (x=0.1, 0.15, 0.2)

Authors
Wang, X Pan, YW Cui, QL Zhang, J Gao, W Zou, GT
Citation
X. Wang et al., Pressure dependence of the lattice distortion in perovskite La0.5-xBixCa0.5MnO3 (x=0.1, 0.15, 0.2), J SOL ST CH, 160(2), 2001, pp. 307-310
Citations number
16
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
ISSN journal
00224596 → ACNP
Volume
160
Issue
2
Year of publication
2001
Pages
307 - 310
Database
ISI
SICI code
0022-4596(200109)160:2<307:PDOTLD>2.0.ZU;2-R
Abstract
The in situ behavior of distorted perovskite La0.5-xBixCa0.5MnO3 (x = 0.1, 0.15, 0.2) under high pressure has been studied by energy-dispersive X-ray diffraction in a diamond anvil cell. An abnormal change of the 202-040 d-sp acing ascribed to the disappearance of the distortion mode Q(2) in the MnO6 octahedra is observed at 1.2, 1.4, and 1.6 GPa, respectively, and it resul ts in a reduction of the Jahn-Teller distortion commonly existing in the ma nganites. Effect of the unique 6s(2) long-pair character of the Bi3+ ion on the pressure dependence of the lattice distortion is discussed. (C) 2001 A cademic Press.