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Bi-directional coupling in strain-mediated multiferroic heterostructures with magnetic domains and domain wall motion
- Source :
- Scientific reports, vol 8, iss 1, Scientific Reports, Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018), Xiao, Z; Lo Conte, R; Chen, C; Liang, CY; Sepulveda, A; Bokor, J; et al.(2018). Bi-directional coupling in strain-mediated multiferroic heterostructures with magnetic domains and domain wall motion. Scientific Reports, 8(1). doi: 10.1038/s41598-018-23020-2. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/15g9j34q
- Publication Year :
- 2018
- Publisher :
- eScholarship, University of California, 2018.
-
Abstract
- Strain-coupled multiferroic heterostructures provide a path to energy-efficient, voltage-controlled magnetic nanoscale devices, a region where current-based methods of magnetic control suffer from Ohmic dissipation. Growing interest in highly magnetoelastic materials, such as Terfenol-D, prompts a more accurate understanding of their magnetization behavior. To address this need, we simulate the strain-induced magnetization change with two modeling methods: the commonly used unidirectional model and the recently developed bidirectional model. Unidirectional models account for magnetoelastic effects only, while bidirectional models account for both magnetoelastic and magnetostrictive effects. We found unidirectional models are on par with bidirectional models when describing the magnetic behavior in weakly magnetoelastic materials (e.g., Nickel), but the two models deviate when highly magnetoelastic materials (e.g., Terfenol-D) are introduced. These results suggest that magnetostrictive feedback is critical for modeling highly magnetoelastic materials, as opposed to weaker magnetoelastic materials, where we observe only minor differences between the two methods’ outputs. To our best knowledge, this work represents the first comparison of unidirectional and bidirectional modeling in composite multiferroic systems, demonstrating that back-coupling of magnetization to strain can inhibit formation and rotation of magnetic states, highlighting the need to revisit the assumption that unidirectional modeling always captures the necessary physics in strain-mediated multiferroics.
- Subjects :
- 010302 applied physics
Physics
Work (thermodynamics)
Multidisciplinary
Magnetic domain
Condensed matter physics
lcsh:R
lcsh:Medicine
Heterojunction
Magnetostriction
02 engineering and technology
021001 nanoscience & nanotechnology
Rotation
01 natural sciences
Article
Other Physical Sciences
Magnetization
Domain wall (magnetism)
0103 physical sciences
lcsh:Q
Multiferroics
Biochemistry and Cell Biology
lcsh:Science
0210 nano-technology
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Scientific reports, vol 8, iss 1, Scientific Reports, Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018), Xiao, Z; Lo Conte, R; Chen, C; Liang, CY; Sepulveda, A; Bokor, J; et al.(2018). Bi-directional coupling in strain-mediated multiferroic heterostructures with magnetic domains and domain wall motion. Scientific Reports, 8(1). doi: 10.1038/s41598-018-23020-2. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/15g9j34q
- Accession number :
- edsair.doi.dedup.....3be6a92656f382a70791f389782c2f4f