MAGNETIC SPECIFIC-HEAT STUDY OF THE COMPETITION BETWEEN FERROMAGNETICAND ANTIFERROMAGNETIC SPIN-SPIN EXCHANGE INTERACTIONS IN PBSNMNTE

Authors
LAZARCZYK P JEDRZEJCZAK A STORY T ARCISZEWSKA M GALAZKA RR
Citation
P. Lazarczyk et al., MAGNETIC SPECIFIC-HEAT STUDY OF THE COMPETITION BETWEEN FERROMAGNETICAND ANTIFERROMAGNETIC SPIN-SPIN EXCHANGE INTERACTIONS IN PBSNMNTE, Acta Physica Polonica. A, 90(5), 1996, pp. 891-894
Citations number
5
Categorie Soggetti
Physics
Journal title
Acta Physica Polonica. A → ACNP
ISSN journal
05874246
Volume
90
Issue
5
Year of publication
1996
Pages
891 - 894
Database
ISI
SICI code
0587-4246(1996)90:5<891:MSSOTC>2.0.ZU;2-2
Abstract
Magnetic contribution to the specific heat, magnetic susceptibility an d Hall effect are experimentally studied in Pbl(1-x-y)Sn(y)Mn(x)Te sem imagnetic semiconductors with y = 0.72 and x = 0.08 and with different carrier concentrations 10(20) less than or equal to p less than or eq ual to 10(21) cm(-3). The ferromagnetism observed in crystals with p > 3 x 10(20) cm(-3) breaks down with a decreasing concentration of carr iers due to an increasing competition between Ruderman-Kittel-Kasuya-Y oshida and superexchange interactions.