Microwave processing of ZnO based dilute magnetic semiconductors

Author

Dube, Charu Lata ; Kashyap, Subhash C. ; Dube, D.C. ; Agarwal, D.K.

Author_Institution

Dept. of Phys., Indian Inst. of Technol. Delhi, New Delhi

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

126

Lastpage

129

Abstract

In the present work, polycrystalline ferromagnetic Zn_0.95Co_0.05O samples have been synthesized in a TM₀₁₁ single mode cylindrical microwave resonant cavity operating at 2.45 GHz. The synthesized specimen is analyzed for its crystallographic and electronic structure along with magnetic and electron transport properties. The X-ray diffractogram and photoelectron spectroscopy of Zn_0.95Co_0.05O establish the incorporation of cobalt atoms into ZnO lattice. The room temperature magnetization study confirms the ferromagnetic ordering in the microwave processed highly resistive samples; which can be attributed to bound magnetic polarons model.

Keywords

II-VI semiconductors; X-ray diffraction; band structure; crystal structure; ferromagnetic materials; magnetic polarons; photoelectron spectroscopy; semimagnetic semiconductors; wide band gap semiconductors; zinc compounds; TM₀₁₁ single mode cylindrical microwave resonant cavity; X-ray diffractogram; Zn_0.95Co_0.05O; bound magnetic polaron model; cobalt atoms; crystallographic structure; dilute magnetic semiconductors; electron transport property; electronic structure; ferromagnetic ordering; frequency 2.45 GHz; microwave processing; photoelectron spectroscopy; polycrystalline ferromagnetic samples; room temperature magnetization; temperature 293 K to 298 K; Cobalt; Crystallography; Electrons; Magnetic analysis; Magnetic properties; Magnetic resonance; Magnetic semiconductors; Spectroscopy; X-ray diffraction; Zinc oxide; Cobalt doped zinc oxide; Dilute Magnetic Semi-conductor; Magnetization; Single mode microwave H-field resonator cavity; X-ray diffraction; X-ray photoelectron spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4763009

Filename

4763009