Room-temperature ferromagnetism in nanoparticles of superconducting materials |
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Authors: | Shipra CNR Rao |
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Institution: | Chemistry and Physics of Materials Unit and Department of Science and Technology Unit on Nanoscience, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, India |
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Abstract: | Nanoparticles of superconducting (YBCO) () 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 () and δ-MoN () exhibit room-temperature ferromagnetism. |
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Keywords: | 75 30 Pd 71 24 +q 74 72 Bk |
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