Zinc–Cobalt Oxide Thin Films: High Curie Temperature Studied by Electron Magnetic Resonance |
| |
| Authors: | Bogumił Cieniek,Ireneusz Stefaniuk,Ihor Virt,Roman V. Gamernyk,Iwona Rogalska |
| |
| Affiliation: | 1.Institute of Materials Engineering, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland;2.Institute of Physics, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland;3.Institute of Physics, Mathematics, Economy and Innovation Technologies, Drohobych Ivan Franko State Pedagogical University, Stryiska 3, 82100 Drohobych, Ukraine;4.Department of Experimental Physics, Ivan Franko National University of Lviv, 79005 Lviv, Ukraine |
| |
| Abstract: | The material with a high Curie temperature of cobalt-doped zinc oxide embedded with silver-nanoparticle thin films was studied by electron magnetic resonance. The nanoparticles were synthesized by the homogeneous nucleation technique. Thin films were produced with the pulsed laser deposition method. The main aim of this work was to investigate the effect of Ag nanoparticles on the magnetic properties of the films. Simultaneously, the coexisting Ag0 and Ag2+ centers in zinc oxide structures are shown. A discussion of the signal seen in the low field was conducted. To analyze the temperature dependence of the line parameters, the theory described by Becker was used. The implementation of silver nanoparticles causes a significant shift of the line, and the ferromagnetic properties occur in a wide temperature range with an estimated Curie temperature above 500 K. |
| |
| Keywords: | ferromagnetism at room temperature electron magnetic resonance low-field microwave absorption zinc oxide silver nanoparticles |
|
|
