Experimental evidence of the spin-glass transition in the diluted magnetic semiconductor Zn(1-x)Mn(x)In(2)Se(4)
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
This work reports on magnetic measurements of the quasi-two-dimensional (quasi-2D) system Zn(1-x)Mn(x)In(2)Se(4), with 0.01 <= x <= 1.00. For x > 0.67, the quasi-2D system seems to develop a spin-glass behaviour. Evidence of a true phase transition phenomenon is provided by the steep increase of the nonlinear susceptibility chi(nl) when approaching T(C) from above. The static scaling of chi(nl) data yields critical exponents delta = 4.0 +/- 0.2, phi = 4.37 +/- 0.17 and TC = 3.4 +/- 0.1 K for the sample with x = 1.00 and similar values for the sample with x = 0.87. These critical exponents are in good agreement with values reported for other spin-glass systems with short-range interactions. |
Identificador |
JOURNAL OF PHYSICS-CONDENSED MATTER, v.20, n.45, 2008 0953-8984 http://producao.usp.br/handle/BDPI/29416 10.1088/0953-8984/20/45/455211 |
Idioma(s) |
eng |
Publicador |
IOP PUBLISHING LTD |
Relação |
Journal of Physics-condensed Matter |
Direitos |
restrictedAccess Copyright IOP PUBLISHING LTD |
Palavras-Chave | #SUSCEPTIBILITY #SYSTEM #TRANSPORT #MNIN2SE4 #CRYSTALS #BEHAVIOR #Physics, Condensed Matter |
Tipo |
article original article publishedVersion |