期刊
APPLIED PHYSICS LETTERS
卷 104, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4869304
关键词
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资金
- DOE Division of Materials Sciences and Engineering (Physical Behavior of Materials) [DE-FG02-09ER46674]
- NSF [CMMI-1200038]
- NSFC [51132001]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1200038] Funding Source: National Science Foundation
Phase field modeling and simulation reveal that the magnetoelectric response of particulate magnetostrictive-piezoelectric composites sensitively depends on the magnetic domain structures of magnetostrictive phase. It is found that the longitudinal and transverse magnetoelectric coefficients of particulate composites with isotropic two-phase microstructures can be effectively tailored by controlling the magnetic domain structures. It is shown that engineered magnetic domains via controlled internal residual stress through appropriate processing, such as co-sintering under external stress (rather than isostatic pressing) in analogy to stress annealing of magnetostrictive materials, provide a powerful means to optimize magnetoelectric responses of particulate composites without fabricating anisotropic two-phase microstructures (e. g., laminate, fiber/rod). (C) 2014 AIP Publishing LLC.
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