SPECIFIC-HEAT OF (CD1-X-YZNYMNX)3AS2

Authors
BEDNARSKI H CISOWSKI J SCHMITT D VOIRON J PORTAL JC LUBCZYNSKI W
Citation
H. Bednarski et al., SPECIFIC-HEAT OF (CD1-X-YZNYMNX)3AS2, Physica status solidi. a, Applied research, 141(2), 1994, pp. 367-372
Citations number
22
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
141
Issue
2
Year of publication
1994
Pages
367 - 372
Database
ISI
SICI code
0031-8965(1994)141:2<367:SO(>2.0.ZU;2-D
Abstract
The specific heat of the tetragonal semimagnetic semiconductor (Cd1-x- yZnyMnx)3As2 with various compositions is measured in the temperature range 1.7 to 25 K. The total specific heat is decomposed into the magn etic and lattice contributions by using a phenomenological interpolati on procedure. The magnetic contribution is analysed within our general ized pair approximation model, treating the total Mn-Mn interaction st rength as a sum of superexchange and the Bloembergen-Rowland exchange. As a result, the values of the first nearest-neighbour exchange const ants for both mechanisms are obtained appearing to be strongly depende nt on Zn content.