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Room Temperature Multiferroicity in Zn0.98Cu0.02O Film Prepared in N Plasma

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Abstract

Zn0.98Cu0.02O films have been prepared under different conditions by pulsed laser deposition. Ferromagnetism with saturate magnetization of about 7 emu/cm3 at 300 K has been observed in Zn0.98Cu0.02O film prepared in N plasma at room temperature. The concentration of oxygen vacancies was increased by N substituting O in N plasma, and the ferromagnetism originated from the aligned magnetic moments of more Cu ions mediated by oxygen vacancies. Furthermore, ferroelectricity has been confirmed by the observation of the electrical field dependent converse piezoelectric coefficient d 33 loop at room temperature, indicating the potential multiferroic applications.

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Authors and Affiliations

  1. Department of Physics, Southeast University, Nanjing, 211189, China

    Qingyu Xu, Hao Liu, Qi Li & Mingxiang Xu

  2. Department of Materials Science and Engineering, Nanjing University, Nanjing, 210008, China

    Zheng Wen & Di Wu

  3. Department of Physics, Nanjing University, Nanjing, 210008, China

    Jinlong Gao & Shaolong Tang

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  1. Qingyu Xu
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  2. Hao Liu
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  3. Zheng Wen
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  4. Jinlong Gao
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  5. Di Wu
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  6. Qi Li
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  7. Shaolong Tang
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  8. Mingxiang Xu
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Correspondence to Qingyu Xu.

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Xu, Q., Liu, H., Wen, Z. et al. Room Temperature Multiferroicity in Zn0.98Cu0.02O Film Prepared in N Plasma. J Supercond Nov Magn 24, 2119–2122 (2011). https://doi.org/10.1007/s10948-011-1164-y

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  • DOI: https://doi.org/10.1007/s10948-011-1164-y

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