Possible Ferromagnetism in YCuO System

Abstract:

polycrystalline Cu_xY_yO_z are made through solid state reaction. Ferromagnetism is found in this YCuO system at room temperature. The ferromagnetism quite probably originates from Cu₂Y₂O₅ , the Copper Yttrium Oxide. The average magnetic moment per Cu²⁺ is estimated to be 0.04μ_B. Itinerant electron magnetism is a rational explaination for the observed ferromagnetism. The experiment shows that the excessive amount of Cu may lead more defects and further distortion in the lattice and decrease the exchange interaction. This reminds us that the Copper Yttrium Oxide is a substance not only should be avoided in fabricating YBCO superconductors but also should be considered as a potential substance of magnetic semiconductor.

• Periodical: Solid State Phenomena (Volume 298)
• Pages: 181-185
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.298.181
• Online since: October 2019
• Authors: Gong Qin Xu, Xiao Wei Chen, Xing Yu Mao*
• Keywords: Diluted Magnetic Semiconductor, Room Temperature Ferromagnetism, Spintronics, YBCO Superconductor

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