TY - JOUR
T1 - Thermal conductivity and magnetic phase diagram of CuB2O4
AU - Kawamata, Takayuki
AU - Sugawara, Naoki
AU - Haidar, Siyed Mohammad
AU - Adachi, Tadashi
AU - Noji, Takashi
AU - Kudo, Kazutaka
AU - Kobayashi, Norio
AU - Fujii, Yutaka
AU - Kikuchi, Hikomitsu
AU - Chiba, Meiro
AU - Petrakovskii, German A.
AU - Popov, Mikhail A.
AU - Bezmaternykh, Leonard N.
AU - Koike, Yoji
N1 - Funding Information:
Acknowledgments The thermal conductivity measurements in magnetic fields were performed at the High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University. This work was supported by a Grant-in-Aid for Scientific Research of the Ministry of Education, Culture Sports, Science and Technology, Japan, (Grant Number 17038002) and also by CREST of Japan Science and Technology Corporation. Figures 1 and 2 were drawn using VESTA.42)
Funding Information:
The thermal conductivity measurements in magnetic fields were performed at the High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University. This work was supported by a Grant-in-Aid for Scientific Research of the Ministry of Education, Culture Sports, Science and Technology, Japan, (Grant Number 17038002) and also by CREST of Japan Science and Technology Corporation. Figures 1 and 2 were drawn using VESTA.42)
Publisher Copyright:
©2019 The Physical Society of Japan
PY - 2019
Y1 - 2019
N2 - We have measured temperature and magnetic field dependences of the thermal conductivity along the c-axis, κc, and that along the [110] direction, κ110, of CuB2O4 single crystals in zero field and magnetic fields along the c-axis and along the [110] direction. It has been found that the thermal conductivity is nearly isotropic and very large in zero field and that the thermal conductivity due to phonons is dominant in CuB2O4. The temperature and field dependences of κc and κ110 have markedly changed at phase boundaries in the magnetic phase diagram, which has been understood to be due to the change of the mean free path of phonons caused by the change of the phonon-spin scattering rate at the phase boundaries. It has been concluded that thermal conductivity measurements are very effective for detecting magnetic phase boundaries.
AB - We have measured temperature and magnetic field dependences of the thermal conductivity along the c-axis, κc, and that along the [110] direction, κ110, of CuB2O4 single crystals in zero field and magnetic fields along the c-axis and along the [110] direction. It has been found that the thermal conductivity is nearly isotropic and very large in zero field and that the thermal conductivity due to phonons is dominant in CuB2O4. The temperature and field dependences of κc and κ110 have markedly changed at phase boundaries in the magnetic phase diagram, which has been understood to be due to the change of the mean free path of phonons caused by the change of the phonon-spin scattering rate at the phase boundaries. It has been concluded that thermal conductivity measurements are very effective for detecting magnetic phase boundaries.
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U2 - 10.7566/JPSJ.88.114708
DO - 10.7566/JPSJ.88.114708
M3 - Article
AN - SCOPUS:85074749546
SN - 0031-9015
VL - 88
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 11
M1 - 114708
ER -