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A quasistatic hysteresis model for magnetoelectric effect in multiferroic nanostructured films with surface effect
- Source :
- Journal of Alloys and Compounds. 762:706-718
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The investigation of hysteresis induced self-biased magnetoelectric (ME) coupling in multiferroic nanostructured films is significant for self-biased nano-devices. In this paper, we propose a quasistatic hysteresis model for ME effect in multiferroic nanostructured films based on surface stress model and multi-field coupled hysteretic constitutive model. For an asymmetric structure consisting of different magnetostrictive phases, the flexural strain is considered in the theoretical model. It is revealed that ME coupling in ME composites with nano-scale thickness is significantly size-dependent below critical size, which is enhanced by surface effect. Self-biased ME hysteretic behavior can be observed by considering the hysteretic effect of magnetostrictive materials, resulting in a large ME voltage coefficient in absence of bias magnetic field. The self-biased ME voltage coefficient is affected by pre-stress and thermal variation due to the complex magneto-elastic-thermal coupling characteristics of constituent materials. The proposed model provides a method to analyze and evaluate the nonlinear ME coupling characteristics of self-biased nano-devices operating under extreme stress or temperature conditions.
- Subjects :
- 010302 applied physics
Materials science
Condensed matter physics
Mechanical Engineering
Surface stress
Metals and Alloys
Magnetoelectric effect
Magnetostriction
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Magnetic field
Condensed Matter::Materials Science
Hysteresis
Mechanics of Materials
0103 physical sciences
Materials Chemistry
Coupling (piping)
Multiferroics
0210 nano-technology
Quasistatic process
Subjects
Details
- ISSN :
- 09258388
- Volume :
- 762
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........4d237dedf9ba7745bf00eef37633ecaf