Evaluating the electro-optical effect in alternating current-voltage- modulated Kerr response for multiferroic heterostructures

Li Shu, Ya Gao, Jia Mian Hu, Zheng Li, Yang Shen, Yuanhua Lin, C. W. Nan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Voltage-modified Kerr magnetometer has been widely used to measure the voltage-modulated magnetic properties in multiferroic magnetic/ferroelectric heterostructures, where the Kerr signal change is considered to be in proportion to magnetization change, i.e., the magneto-optical Kerr effect. However, the total Kerr signal changes might also incorporate contribution from the electro-optical effect of the ferroelectric layer in the multiferroic heterostructure. Here, we evaluate quantitatively, by combining analytical calculations with experimental observations, such electro-optical contribution in the total voltage-induced Kerr signal changes with comparison to those from Kerr effect via converse magnetoelectric coupling. Influences of several parameters, including the magnetic film thickness on the Kerr signal changes, are also investigated.

Original languageEnglish (US)
Article number204102
JournalJournal of Applied Physics
Volume114
Issue number20
DOIs
StatePublished - Nov 28 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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