Eur. Phys. J. Appl. Phys. 80, 20701 (2017)
https://doi.org/10.1051/epjap/2017170198

Regular Article

Correlation of ESR line-shape and conductivity in low-level Bi doped lanthanum manganites

Institute of Magnetism, NAS of Ukraine, 36-b Vernadsky Blvd., 03680 Kyiv, Ukraine

^* e-mail: polek.taras@gmail.com

Received: 12 June 2017
Received in final form: 17 August 2017
Accepted: 2 October 2017
Published online: 27 October 2017

Abstract

Resistive and resonant properties of the low-level Bi doped lanthanum manganite are studied in the temperature range of 180–300 K. The magnetic resonance line asymmetry is found to be strongly dependent on temperature. Based on the results of electric conductivity measurements, the dependence of the skin depth on temperature is calculated. A direct correlation between the asymmetry of the electron spin resonance line and the penetration depth of the microwave radiation in the sample is established. Additional ESR measurements of La_0.925Bi_0.075MnO₃ powder show a stability of the asymmetry of ESR line with temperature changes.