A large magnetoinductance effect in La0.67Ba0.33MnO3

TL;DR

This study investigates the magnetoinductance effect in La0.67Ba0.33MnO3, revealing a significant peak in reactance near the transition temperature, driven by changes in self inductance rather than capacitance.

Contribution

It demonstrates a large magnetoinductance effect in La0.67Ba0.33MnO3 and attributes it to self inductance changes, providing new insights into its magnetic and electrical properties.

Findings

Peak in ac resistance at 325 K

Magnetoreactance exceeds magnetoresistance at 1 kG

Magnetoreactance linked to self inductance changes

Abstract

We report four probe impedance of La0.67Ba0.33MnO3 at f = 100 kHz under different dc bias magnetic fields. The ac resistance (R) exhibits a peak around Tp = 325 K which is accompanied by a rapid increase and a peak in the reactance (X) in a zero field. The magnetoreactance exhibits a sharp peak close to Tp and its magnitude (= 60% in H = 1 kG) exceeds that of the ac magnetoresistance (= 5 % inH = 1 kG). It is suggested that the magnetoreactance arises from changes in the self inductance of the sample rather than the capacitance.