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Title: Ferromagnetic superexchange interaction and spin glass behaviour in Sm{sub 2}CoMnO{sub 6} nanoparticles

Sm{sub 2}CoMnO{sub 6} samples with particle sizes ∼70 nm were synthesized by a sol-gel technique. Field cooled magnetization study exhibited a ferromagnetic transition with a Curie temperature at ∼139K. This was attributed to ferromagnetic Co{sup 2+}−O−Mn{sup 4+} superexchange interaction. The results of magnetic relaxation measurements could be fitted to a stretched exponential function indicating the presence of both ferromagnetic and spin glass components in the system.
Authors:
;  [1] ;  [2]
  1. Department of Metallurgical and Material Engineering, Jadavpur University, Kolkata-700 032 (India)
  2. MLS Professor's Unit, Indian Association for the Cultivation of Science, Kolkata-700 032 (India)
Publication Date:
OSTI Identifier:
22269470
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COBALT COMPOUNDS; COBALT IONS; CURIE POINT; FERROMAGNETIC MATERIALS; FERROMAGNETISM; MAGNETIZATION; MANGANATES; MANGANESE IONS; NANOSTRUCTURES; PARTICLE SIZE; PARTICLES; RELAXATION; SAMARIUM COMPOUNDS; SOL-GEL PROCESS; SPIN GLASS STATE