Spin-glass like states in the ferrimagnet FeCr2S4

• Published in: Physica. B, Condensed matter Vol. 296; no. 4; pp. 301 - 305
• Main Authors: Tsurkan, V., Baran, M., Szymczak, R., Szymczak, H., Tidecks, R.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 2001; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Ferrimagnetic semiconductors; Fluctuating exchange interactions; Magnetic properties and materials; Magnetization curves, hysteresis, Barkhausen and related effects; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Magnetocrystalline anisotropy; Physics; Spin-glass like behaviour; Ferrimagnetic semiconductors; 75.50.L; 75.30.G; 75.50.P; Magnetocrystalline anisotropy; Spin-glass like behaviour; Fluctuating exchange interactions; Inorganic compounds; Magnetization; Magnetic relaxation; Iron sulfides; Ternary compounds; Transition element compounds; Magnetic hysteresis; Experimental study; Ferrimagnetic materials; Thermoremanent magnetization; Monocrystals; Reentrant phases; Magnetic anisotropy; Coercive force; Frustration; Exchange interactions; Chromium sulfides
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/S0921-4526(00)00760-2

Magnetisation measurements on FeCr2S4 single crystals revealed a re-entrant behaviour at temperatures below 60K. Sharp spin-glass like changes of zero-field-cooled and thermoremanent magnetisations, coercive force and strong time-dependent magnetisation relaxation below 20K were also found. The observed effects are considered to be a result of fluctuating competing exchange interactions along with the high magnetocrystalline anisotropy of tetrahedral Fe ions strongly antiferromagnetically coupled with Cr ions.