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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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.
|Subjects:||Material Science > Functional and hybrid materials|
Physical Science > Nanophysics
|Deposited On:||20 Jan 2009 11:18|
|Last Modified:||12 Feb 2009 10:24|
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