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Room-temperature ferromagnetism in nanoparticles of superconducting materials

Shipra, F. N. U. and Gomathi, A and Sundaresan, A and Rao, C. N. R. (2007) Room-temperature ferromagnetism in nanoparticles of superconducting materials. Solid State Communications, 142 . pp. 685-688.

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Abstract

Nanoparticles of superconducting YBa2Cu3O7-δ(YBCO) (TC = 91K) exhibit ferromagnetism at room temperature while the bulk YBCO, obtained by heating the nanoparticles at high temperature (940 C), shows a linear magnetization curve. Across the superconducting transition temperature, the magnetization curve changes from that of a soft ferromagnet to a superconductor. Furthermore, our experiments reveal that not only nanoparticles of metal oxides but also metal nitrides such as NbN (TC = 6-12 K) and δ-MoN (TC ~ 6K) exhibit room-temperature ferromagnetism.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Physical Science > Nanophysics
ID Code:2726
Deposited By:JNCASR
Deposited On:20 Jan 2009 11:18
Last Modified:12 Feb 2009 10:24

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