Magnetic behavior of the Co2-xZnxTiO4 and Co2SnO4 systems

Srivastav, J. K. ; Ramakrishnan, S. ; Marathe, V. R. ; Chandra, G. ; Vijayaraghavan, R. ; Kulkarni, J. A. ; Darshane, V. S. ; Singh, S. (1987) Magnetic behavior of the Co2-xZnxTiO4 and Co2SnO4 systems Journal of Applied Physics, 61 (8). pp. 3622-3624. ISSN 0021-8979

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Our ac susceptibility (χ) measurements, carried out between 1.7 and 100 K, show five χ peaks, signaling five transition temperatures, in the disordered frustrated spinel ferrite Co2TiO4. This result, in conjunction with the replica symmetric mean field theory of vector spin glasses and earlier magnetization and neutron diffraction studies, indicates a separate freezing of A- and B-site spins. To our knowledge, such a phenomenon has not been observed before. Co2SnO4 and Co1.2Zn0.8TiO4 χ measurements, where three and one χ peaks are respectively observed, support this picture.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Magnetic Susceptibility; Magnetization; Spinels; Ferrites; Cobalt Oxides; Titanium Oxides; Tin Oxides; Zinc Oxides; Temperature Dependence
ID Code:68478
Deposited On:02 Nov 2011 11:16
Last Modified:12 Jul 2012 11:57

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