Open AccessMAGNETIC SUSCEPTIBILITY AND THE SPIN-GLASS TRANSITION OF Zn1-x Mnx Se AT LOW TEMPERATURES
Author(s) -
Yuqing Yang
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.1454
Subject(s) - spin glass , condensed matter physics , paramagnetism , magnetic susceptibility , materials science , atmospheric temperature range , spin (aerodynamics) , squid , magnetic semiconductor , transition temperature , glass transition , nuclear magnetic resonance , physics , ferromagnetism , superconductivity , thermodynamics , ecology , polymer , biology
Low-field magnetic susceptibility of the diluted magnetic semiconductors Zn1-xMnxSe was measured between 4.2 and 30 K for the Mn concentration range 0.1≤x≤0.50 using SQUID magnetometer. When x≥0.30, the system shows a spin-glass transition in the above temperature range, as evidenced by a somewhat rounded cusp in the susceptibility. The transition temperature of spin-glass is as follow: x=0.30, Tf=10.5 K; x=0.40, Tf=16.0 K; x=0.50, Tf=19.5 K. The phase diagrams for the boundary of the paramagnetic and the spin-glass phases are obtained for this system. The difference of spin-glass transition temperature between Zn1-xMnx Se and Cd1-xMnxSe is discussed. It is found that for any given Mn concentration x the spin-glass transition temperature Tf of Zn1-xMnxSe is higher than that of Cd1-xMnxSe.