Eur. Phys. J. Special Topics 228, 683–687 (2019)
https://doi.org/10.1140/epjst/e2019-800200-9

Regular Article

Local magneto-optical response of H⁺ irradiated Zn_1−xCo_xO thin films

¹ CNR-Istituto di Struttura della Materia, Via Salaria Km. 29, 300 00015 Monterotondo St., Roma, Italy
² Dipartimento di Fisica “E.R. Caianiello”, Universita’ di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
³ Dipartimento di Fisica, Universita’ di Roma “La Sapienza,” P.le A. Moro 2, 00185 Roma, Italy

^a e-mail: antonio.ditrolio@cnr.it

Received: 15 November 2018
Received in final form: 24 January 2019
Published online: 3 July 2019

Abstract

The local distribution of magneto-optical properties of hydrogen irradiated Zn_1−xCo_xO thin films has been investigated by means of magneto-optical Kerr microscope magnetometer, capable of simultaneously measuring the magnetic properties with a micrometer spatial resolution. The experimental results indicate that the magneto-optical response is quite homogenous on the micrometer scale, indicating that the film grain size is crucial in determining the local coercivity distribution.