Ferromagnetism in ZnO single crystal

• Published in: Physica. B, Condensed matter Vol. 405; no. 12; pp. 2659 - 2663
• Main Authors: Mishra, D.K., Kumar, P., Kumar Sharma, Manoj, Das, J., Singh, S.K., Roul, B.K., Varma, S., Chatterjee, Ratnamala, Srinivasu, V.V., Kanjilal, D.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.06.2010; Elsevier
• Subjects: Condensed matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystal defects; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Ferromagnetism; Magnetic properties and materials; Magnetic semiconductors; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Photoluminescence; Physics; Raman measurements; Room temperature ferromagnetism; Saturation (magnetic); Semiconductor; Single crystals; Studies of specific magnetic materials; Vacancies; Zinc; Zinc oxide; Raman measurements; Semiconductor; Room temperature ferromagnetism; Photoluminescence; Crystal defects; Vacancies; Interstitials; Magnetic hysteresis; Magnetic semiconductors; Monocrystals; Zinc oxide; Ferromagnetism; Saturation magnetization; X-ray photoelectron spectra
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2010.03.047

Room temperature ferromagnetism (RTFM) with a saturation magnetization ( M s) of 0.025 emu/cm 3 has been observed in single crystal of zinc oxide (ZnO). The presence of intrinsic defects like zinc (Zn) interstitials and oxygen (O) vacancies in single crystal ZnO is established through micro-Raman and photoluminescence studies. The role of intrinsic defects in introduction of RTFM in single crystal ZnO is discussed.