Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1246
Title: Particle-size effects on the value of Tc of MnFe2O4 : Evidence for finite-size scaling
Authors: Kulkarni, G U
Kannan, K R
Arunarkavalli, T
Rao, C N R
Keywords: Dependent Curie-Temperature
Magnetic-Properties
Manganese Ferrite
Issue Date: 1-Jan-1994
Publisher: American Physical Society
Citation: Physical Review B 49(1), 724-727 (1994)
Abstract: 57Fe Mössbauer measurements show that the Tc of 〈12〉-nm particles of MnFe2O4 is higher than that of the 〈33〉-nm particles, which exhibit the bulk Tc value (573 K). The 57Fe isomer shift as well as the internal field are, however, independent of the particle size, as is the cation distribution determined by Mn and Fe extended x-ray absorption fine structure and Mn x-ray absorption near-edge structure measurements at different temperatures. The results confirm that the higher Tc of the 〈12〉-nm particles arises from finite-size scaling.
Description: Note. Restricted Access.
URI: http://hdl.handle.net/10572/1246
Other Identifiers: 1098-0121
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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