Magnetoelectric Effect in Cofired Lead‐Free Laminated (Bi_{0.5}Na_{0.5}TiO₃‐Bi_{0.5}K_{0.5}TiO₃)/(Ni_{0.8}Zn_{0.2})Fe₂O₄ Composites

Sheng Liu; Shuoqing Yan; Heng Luo; Lingling Yao; Yuhan Li; Jun He; Longhui He; Shengxiang Huang; Lianwen Deng

doi:10.1002/pssa.201700533

journal article·2017-12

Magnetoelectric Effect in Cofired Lead‐Free Laminated (Bi_0.5Na_0.5TiO₃‐Bi_0.5K_0.5TiO₃)/(Ni_0.8Zn_0.2)Fe₂O₄ Composites

Sheng Liu, Shuoqing Yan, Heng Luo, Lingling Yao, Yuhan Li, Jun He, Longhui He, Shengxiang Huang, Lianwen Deng

physica status solidi (a)· Volume 214· Issue 12

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Source abstract

Abstract

Lead‐free magnetoelectric (ME) laminated (80Bi_0.5Na_0.5TiO₃‐20Bi_0.5K_0.5TiO₃)/(Ni_0.8Zn_0.2)Fe₂O₄ (BNKT/NZFO) composites are prepared via a modified cofiring processing, combining grain refinement and liquid phase sintering with low sintering aid content. The microstructure, dielectric, ferroelectric, magnetic, and magnetoelectric properties are investigated by varying the thickness of NZFO layer. The results show that the coexistence of independent BNKT and NZFO phase and the presence of the morphotopic phase boundary in BNKT phase with high piezoelectric coefficient d₃₃ of 131 pC/N are confirmed. Laminated composites have clear and well‐bonded interfaces across the two layers, as well as improved ME properties. The maximum ME voltage coefficient (α_E31) of the laminated composite reach 115.1 mV cm⁻¹ Oe⁻¹ with an optimized BNKT/NZFO layer thickness ratio of 1/2. In addition, a zero‐biased ME response was observed in BNKT/NZFO laminated composites.

Source: crossref · Quality: baseline

Research context

Ceramics & glasses Electronic materials Composites

OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Karst Systems and Hydrogeology

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physics and Electronics, Institute of Super‐Microstructure and Ultrafast Process in Advanced Materials, Central South University Changsha 410083 China

Funding

National Key Research and Development Program of China

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