ANALYSIS OF THE LOW-TEMPERATURE PROPERTIE S OF HTSC OXIDES LA2-XMXCUO4-DELTA IN THE MODEL OF MULTIWELL POTENTIAL CENTERS

Authors
IVANOV MA MITROFANOV VY FISHMAN AY FOTIEV AA
Citation
Ma. Ivanov et al., ANALYSIS OF THE LOW-TEMPERATURE PROPERTIE S OF HTSC OXIDES LA2-XMXCUO4-DELTA IN THE MODEL OF MULTIWELL POTENTIAL CENTERS, Fizika nizkih temperatur, 19(4), 1993, pp. 364-368
Citations number
14
Categorie Soggetti
Physics, Applied
Journal title
Fizika nizkih temperatur → ACNP
ISSN journal
01326414
Volume
19
Issue
4
Year of publication
1993
Pages
364 - 368
Database
ISI
SICI code
0132-6414(1993)19:4<364:AOTLPS>2.0.ZU;2-O
Abstract
The thermodynamic properties of crystals undergoing the structural pha se transitions due to the cooperative pseudo-Jahn - Teller effect are considered. The influence of random crystal fields caused by impurity atoms on the heat capacity, the elastic moduli and the linear expansio n coefficient is investigated in the random phase approximation. It is shown that the linear term in the low-temperature specific heal incre ases with the impurity concentration at x < x(cr).