Room-temperature ferromagnetism in nanoparticles of superconducting materials

2007/05/06 by Shipra, A. Gomathi, A. Sundaresan +1 · 2 citations
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #ZnO doping and properties #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.1016/j.ssc.2007.04.041

published as Solid State Communication 142 (2007) 685 · 11 pages, 6 figures

openalex publication_date 2007/05/06 · arxiv created 2007/06/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Nanoparticles of superconducting YBa2Cu3O7-delta (YBCO) (Tc = 91 K) exhibit ferromagnetism at room temperature while the bulk YBCO, obtained by heating the nanoparticles at high temperature (940 degree 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 delta-MoN (Tc ~ 6 K) exhibit room-temperature ferromagnetism.

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• Room temperature soft ferromagnetism in the nanocrystalline form of YCo2, A well-known bulk Pauli paramagnet
• Ferromagnetism in transparent Mn(II)-doped indium tin oxide films prepared by sol–gel coating

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