Giant Hydrogen Effect on the Structure and Physical Properties of ZnO and Co-doped ZnO Films Fabricated by the RF Magnetron Sputtering in Ar + H2 Atmosphere | Sciact - CRIS-system of Boreskov Institute of Catalysis

Giant Hydrogen Effect on the Structure and Physical Properties of ZnO and Co-doped ZnO Films Fabricated by the RF Magnetron Sputtering in Ar + H2 Atmosphere Full article

Journal

Journal of Magnetism and Magnetic Materials
ISSN: 0304-8853

Output data

Year: 2019, Volume: 489, Article number : 165461, Pages count : 7 DOI: 10.1016/j.jmmm.2019.165461

Tags

ZnO films; Co-doped ZnO films; Films hydrogenation; Magnetic circular dichroism; Room temperature ferromagnetism

Authors

Edelman I.S. ¹ , Chou Hsiung ^2,3 , Samoshkina Yu.E. ¹ , Petrov D.A. ¹ , Lin Hsien C. ² , Chan Wen L. ² , Sun Shih-Jye ² , Zharkov S.M. ^1,4 , Bondarenko G.V. ¹ , Platunov M.S. ^1,5 , Rogalev A. ⁵

Affiliations

1	Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
2	Department of Physics, National Sun Yat-sen University, 80424 Kaohsiung, Taiwan, ROC
3	Department of Applied Physics, National University of Kaohsiung, 81148 Kaohsiung, Taiwan, ROC
4	Siberian Federal University, 660041 Krasnoyarsk, Russia
5	European Synchrotron Radiation Facility (ESRF), CS 40220, 38043 Grenoble Cedex, France

ZnO and Co-doped ZnO films were synthesized by the radio frequency magnetron sputtering in mixed atmosphere of Ar + 20% O-2 and Ar + 20-50% H-2. The morphology, chemical composition, crystal structure, optical transmission, electrical resistance, and magnetic circular dichroism of the films were investigated. It was established that the films thickness decreased several times when Ar was partly replaced by hydrogen in the sputtering chamber. At the same time, for the Co-doped ZnO films, the increase in the relative Co content with the increasing hydrogen concentration was observed. These phenomena are explained by the formation of gaseous ZnH2 because of the hydrogen reaction with the growing films under the conditions of the high substrate temperature (450 degrees C) and, respectively, the decrease in the Zn component in the films. The hydrogenated Co-doped ZnO films exhibit an increase in electric conductivity and ferromagnetic behavior at room temperature. The magnetic nature of the films is explained by a combination of the intrinsic ferromagnetism (due to the formation of the Co-H-Co complex) with the inclusion of metallic Co clusters.

Edelman I.S. , Chou H. , Samoshkina Y.E. , Petrov D.A. , Lin H.C. , Chan W.L. , Sun S-J. , Zharkov S.M. , Bondarenko G.V. , Platunov M.S. , Rogalev A.
Giant Hydrogen Effect on the Structure and Physical Properties of ZnO and Co-doped ZnO Films Fabricated by the RF Magnetron Sputtering in Ar + H2 Atmosphere
Journal of Magnetism and Magnetic Materials. 2019. V.489. 165461 :1-7. DOI: 10.1016/j.jmmm.2019.165461 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Mar 11, 2019
Accepted:	Jun 13, 2019
Published online:	Jun 14, 2019
Published print:	Nov 1, 2019

Web of science:	WOS:000473578000024
Scopus:	2-s2.0-85067553341
Elibrary:	41698385
Chemical Abstracts:	2019:1226607
Chemical Abstracts (print):	171:270699
OpenAlex:	W2950907323

DB	Citing
Web of science	6
Scopus	7
OpenAlex	8

Giant Hydrogen Effect on the Structure and Physical Properties of ZnO and Co-doped ZnO Films Fabricated by the RF Magnetron Sputtering in Ar + H2 Atmosphere Full article

Giant Hydrogen Effect on the Structure and Physical Properties of ZnO and Co-doped ZnO Films Fabricated by the RF Magnetron Sputtering in Ar + H2 Atmosphere Full article