REENTRANT SPIN-GLASS-LIKE BEHAVIOR OF (FE0.90CR0.05NI0.05)2P
1994 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, Vol. 132, 124-130 p.Article in journal (Refereed) Published
Di-iron phosphide with small substitutions of iron with Cr and Ni, (Fe0.90Cr0.05Ni0.05)2P, has been investigated by SQUID-magnetometry. The sample exhibits a first order ferromagnetic transition at T(c) almost-equal-to 180 K and a re-entrant spin glass transition at T(g) almost-equal-to 125 K. The ferromagnetic transition is severely smeared by weak applied magnetic fields. The re-entrant transition is evidenced from both dc-magnetisation and ac-susceptibility measurements. An aging phenomenon is observed at temperatures below T(g) and the freezing temperatures, T(f), and their corresponding relaxation times, tau scale according to conventional critical slowing down: tau/tau0 = ((T(f) - T(g))/T(g))-znu, with an exponent znu almost-equal-to 9, a value that is found also at ordinary paramagnetic to spin glass transitions.
Place, publisher, year, edition, pages
1994. Vol. 132, 124-130 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-195522DOI: 10.1016/0304-8853(94)90306-9OAI: oai:DiVA.org:uu-195522DiVA: diva2:607976