Work

A tunable self-bias effect in rubbery magnetoelectric materials

Year: 2024

Type: article

Abstract: Magnetoelectric (ME) composites have recently received extensive attention due to their much higher ME coefficients and relatively high operating temperatures compared to single-phase ME materials. However, the ME coefficients of ME composites depend on the external magnetic field, and high ME coefficients usually require the presence of a biased external DC magnetic field. In this work, we propose a hybrid magnetoactive elastomer, which is a rubber matrix embedded with both soft iron particles and hard NdFeB particles. It is found that such a hybrid MAE shows a nonzero piezomagnetic coefficient even as the applied magnetic field approaches zero. Based on this phenomenon, we further propose a soft ME material with a self-bias effect and experimentally demonstrate that the self-bias effect can be tailored by changing the residual magnetization of the hybrid MAE and the charge density of the electret layer. This work successfully demonstrates a new mechanism of the self-bias effect for magnetoelectric materials and introduces a new member to the family of ME materials.

Source: AIP Advances

DOI: 10.1063/5.0225645

Authors: Kai Tan, Rong Jia, Qian Deng

Institutions: State Key Laboratory of Mechanical Structure Strength and Vibration, Huazhong University of Science and Technology, Xi'an Jiaotong University

Language: English

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities