LOW-TEMPERATURE ORTHORHOMBIC TO MONOCLINIC TRANSITION DUE TO SIZE EFFECT IN ND0.7CA0.3-XSRXMNO3 - EVIDENCE FOR A NEW-TYPE OF CHARGE ORDERING

Authors
MILLANGE F CAIGNAERT V MATHER G SUARD E RAVEAU B
Citation
F. Millange et al., LOW-TEMPERATURE ORTHORHOMBIC TO MONOCLINIC TRANSITION DUE TO SIZE EFFECT IN ND0.7CA0.3-XSRXMNO3 - EVIDENCE FOR A NEW-TYPE OF CHARGE ORDERING, Journal of solid state chemistry, 127(1), 1996, pp. 131-135
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Journal of solid state chemistry → ACNP
ISSN journal
00224596
Volume
127
Issue
1
Year of publication
1996
Pages
131 - 135
Database
ISI
SICI code
0022-4596(1996)127:1<131:LOTMTD>2.0.ZU;2-J
Abstract
The structures of the perovskites Nd0.7Cr0.30-xSrxMnO3 have been deter mined at 293 and 1.7 K for x=0, 0.08, and 0.3. Ah these manganites, ex cept the low-temperature form of Nd0.7Ca0.3MnO3 (x=0), exhibit the cla ssical orthorhombic Pnma (GdFeO3) structure. For Nd0.7Ca0.3MnO3, a mon oclinic structure, involving a new kind of charge ordering, is observe d at 1.7 K. The importance of this phenomenon for the understanding of the CMR properties of these materials is emphasized. (C) 1996 Academi c Press, Inc.