Abstract
Heat conduction in the system that releases or absorbs latent heat caused by the first-order phase transition gives rise to an intriguing problem. A typical example is seen in the system showing melting and solidification, where the domain boundary between the liquid and solid phase moves with time, known as moving boundary problems. We report in the present paper that a similar moving domain boundary is observed in an all-solid-state system, spinel MnV 2O4, where there is a first-order magnetic phase transition and the transition temperature changes with applied magnetic field. We found that in the sample attached to a heat bath with a constant temperature, thermal current flows (without external heat source) when the magnetic field is increased or decreased, associated with the release or absorption of the latent heat. We also found that the magnitude of the spontaneous heat current depends on the sweep rate of the magnetic field. We show that the experimental results, which have a nonlinear nature, can be reproduced by a simple model and simulation.
| Original language | English |
|---|---|
| Article number | 034602 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 82 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2013 Mar |
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Keywords
- Domain boundary
- Heat conduction
- Phase transition
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Moving domain boundary and the spontaneous flow of thermal current controlled by magnetic field in spinel MnV2O4 . / Katsufuji, Takuro; Ishikawa, Takayuki; Ishitsuka, Yosuke.
In: Journal of the Physical Society of Japan, Vol. 82, No. 3, 034602, 03.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Moving domain boundary and the spontaneous flow of thermal current controlled by magnetic field in spinel MnV2O4
AU - Katsufuji, Takuro
AU - Ishikawa, Takayuki
AU - Ishitsuka, Yosuke
PY - 2013/3
Y1 - 2013/3
N2 - Heat conduction in the system that releases or absorbs latent heat caused by the first-order phase transition gives rise to an intriguing problem. A typical example is seen in the system showing melting and solidification, where the domain boundary between the liquid and solid phase moves with time, known as moving boundary problems. We report in the present paper that a similar moving domain boundary is observed in an all-solid-state system, spinel MnV 2O4, where there is a first-order magnetic phase transition and the transition temperature changes with applied magnetic field. We found that in the sample attached to a heat bath with a constant temperature, thermal current flows (without external heat source) when the magnetic field is increased or decreased, associated with the release or absorption of the latent heat. We also found that the magnitude of the spontaneous heat current depends on the sweep rate of the magnetic field. We show that the experimental results, which have a nonlinear nature, can be reproduced by a simple model and simulation.
AB - Heat conduction in the system that releases or absorbs latent heat caused by the first-order phase transition gives rise to an intriguing problem. A typical example is seen in the system showing melting and solidification, where the domain boundary between the liquid and solid phase moves with time, known as moving boundary problems. We report in the present paper that a similar moving domain boundary is observed in an all-solid-state system, spinel MnV 2O4, where there is a first-order magnetic phase transition and the transition temperature changes with applied magnetic field. We found that in the sample attached to a heat bath with a constant temperature, thermal current flows (without external heat source) when the magnetic field is increased or decreased, associated with the release or absorption of the latent heat. We also found that the magnitude of the spontaneous heat current depends on the sweep rate of the magnetic field. We show that the experimental results, which have a nonlinear nature, can be reproduced by a simple model and simulation.
KW - Domain boundary
KW - Heat conduction
KW - Phase transition
UR - http://www.scopus.com/inward/record.url?scp=84874722189&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874722189&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.82.034602
DO - 10.7566/JPSJ.82.034602
M3 - Article
AN - SCOPUS:84874722189
VL - 82
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
M1 - 034602
ER -