CROSSOVER FROM LOGARITHMICALLY RELAXING TO PIEZOMAGNETICALLY FROZEN MAGNETIC REMANENCE IN LOW-FIELD-COOLED FE0.47ZN0.53F2
1994 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 49, 6346-6349 p.Article in journal (Refereed) Published
Weak-field-induced magnetization M and temporal relaxation of its remanence mu are investigated in Fe0.47Zn0.53F2 by using Faraday rotation and superconducting quantum interference device (SQUID) magnetometry. Stretched logarithmic decay as predicted by Nattermann and Vilfan is confirmed at T = 2.8 K for freezing fields 3 less-than-or-equal-to B less-than-or-equal-to 4.9 T. At very low fields, 0.001 less-than-or-equal-to B less-than-or-equal-to 1.5 T, virtually constant remanence, mu approximately 44 A/m, is observed. It is due to immobile domains, which form via piezomagnetic coupling to built-in random stress fields.
Place, publisher, year, edition, pages
1994. Vol. 49, 6346-6349 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-195524DOI: 10.1103/PhysRevB.49.6346OAI: oai:DiVA.org:uu-195524DiVA: diva2:607973