ON SUCCESSIVE STRUCTURAL PHASE-TRANSITIONS IN LA2MO4 (M=CU, NI ETC) COMPOUNDS

Authors
ISHIBASHI Y DVORAK V
Citation
Y. Ishibashi et V. Dvorak, ON SUCCESSIVE STRUCTURAL PHASE-TRANSITIONS IN LA2MO4 (M=CU, NI ETC) COMPOUNDS, Journal of the Physical Society of Japan, 63(6), 1994, pp. 2202-2205
Citations number
12
Categorie Soggetti
Physics
Journal title
Journal of the Physical Society of Japan → ACNP
ISSN journal
00319015
Volume
63
Issue
6
Year of publication
1994
Pages
2202 - 2205
Database
ISI
SICI code
0031-9015(1994)63:6<2202:OSSPIL>2.0.ZU;2-K
Abstract
A Landau-type free energy function is proposed to reproduce the phase sequences, which are given rise to by the instability of the modes at the X-point of the I4/mmm phase as seen in La2MO4(M = Cu, Ni etc.) com pounds. Emphasis is placed on the appearance of the Pccn phase. Typica l phase diagrams obtained by varying the coefficient values appearing in the free energy function are presented.