Semi-spin-glass and spin-glass behaviour in EuxSr1-xSe with x=0.5 and 0.7

Autor:	J. A. Mydosh, J C Verstelle, Bekir Özçelik, A J van Duyneveldt, Kerim Kiymaç
Přispěvatelé:	Çukurova Üniversitesi
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Spin glass Condensed matter physics Chemistry Condensed Matter Physics Magnetic susceptibility Nuclear magnetic resonance Phase (matter) Antiferromagnetism Diamagnetism General Materials Science Inorganic compound Néel temperature Solid solution
Zdroj:	Journal of Physics: Condensed Matter. 5:5667-5674
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/5/31/028
Popis:	WOS: A1993LQ91400028 We have investigated the linear and, in detail, the non-linear AC susceptibilities of two insulating spin glasses obtained from the dilution of the antiferromagnetic EuSe with diamagnetic SrSe. The systems studied are the mixed compound EuxSr1-xSe with x = 0.5 and 0.7. The linear susceptibilities of the samples show a single peak at their spin-glass freezing temperatures of 2.00 +/- 0.03 K and 2.88 +/- 0.03 K, respectively. However, the non-linear susceptibilities (third harmonics) of the systems exhibit double peaks: one at the spin-glass transition temperature, and the other at a higher temperature somewhat below the Neel temperature of pure EuSe which is 4.6 K. We believe that the origin of the second peak is the remaining antiferromagnetic phase which seems to persist in the systems down to a critical concentration below x = 0.5.
Databáze:	OpenAIRE
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