Sn 1Àx Mn x O 2 thin films SQUID Ultrasonic spray pyrolysis a b s t r a c t Sn 1Àx Mn x O 2 (x ¼ 0.01-0.05) thin films were synthesized on quartz substrate using an inexpensive ultrasonic spray pyrolysis technique. The influence of doping concentration and substrate temperature on structural and mag
Vacancy-mediated room-temperature ferromagnetism in Zn1−xMnxO thin films
✍ Scribed by Gopalakrishnan, N. ;Balakrishnan, L. ;Srimathy, B. ;Kumar, M. Senthil ;Balasubramanian, T.
- Book ID
- 105366153
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 480 KB
- Volume
- 207
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
The effect of oxygen vacancies on ferromagnetism (FM) in Zn~1−x~Mn~x~O thin films grown by radio frequency (RF) sputtering has been investigated. The grown films at different oxygen pressures have been characterized by X‐ray diffraction (XRD), Hall effect, photoluminescence (PL) and vibrating sample magnetometry (VSM). The observed ferromagnetism/diamagnetism by the VSM measurement due to the variation of oxygen vacancies has been confirmed by XRD, PL, and Hall results. The vacancy‐mediated FM has been explained by the formation of magnetic polarons.
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