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

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872613· OSTI ID:22269470

Chakravorty, Dipankar ^[1]

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1. MLS Professor's Unit, Indian Association for the Cultivation of Science, Kolkata-700 032 (India)

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.

• OSTI ID: 22269470
• Journal Information: AIP Conference Proceedings, Vol. 1591, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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