Experimental observation of defect-induced intrinsic ferromagnetism in III-V nitrides: The case of BN

B. Song, J. C. Han, J. K. Jian, H. Li, Y. C. Wang, H. Q. Bao, W. Y. Wang, H. B. Zuo, X. H. Zhang, S. H. Meng, and X. L. Chen

Phys. Rev. B 80, 153203 – Published 28 October 2009

Abstract

We report the synthesis and magnetic properties characterizations of defective BN obtained from a modified solid-state reaction. X-ray diffraction analysis indicated the presence of two crystalline phases of BN in products. No magnetic impurities, such as Fe, Co, Mn, and Ni were detected by chemical analysis. Transmission electron microscopy observation and photoluminescence spectrum measurement showed the existence of large-scale defects in BN lattices. Magnetic measurement undoubtedly demonstrated the typical ferromagnetic order was established in undoped BN. We consider that the many kinds of defects should be responsible for the long-range magnetic order in the $s p$ material of defective BN.

Received 11 February 2009

DOI:https://doi.org/10.1103/PhysRevB.80.153203

Authors & Affiliations

B. Song^1,2, J. C. Han³, J. K. Jian⁴, H. Li¹, Y. C. Wang¹, H. Q. Bao¹, W. Y. Wang¹, H. B. Zuo³, X. H. Zhang³, S. H. Meng³, and X. L. Chen^1,*

¹Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China
²Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
³Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China
⁴Department of Physics, Xinjiang University, Urumchi 830046, China

^*chenx29@aphy.iphy.ac.cn

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Vol. 80, Iss. 15 — 15 October 2009

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