Thermal conductivity and magnetic phase diagram of CuB2O4

Takayuki Kawamata, Naoki Sugawara, Siyed Mohammad Haidar, Tadashi Adachi, Takashi Noji, Kazutaka Kudo, Norio Kobayashi, Yutaka Fujii, Hikomitsu Kikuchi, Meiro Chiba, German A. Petrakovskii, Mikhail A. Popov, Leonard N. Bezmaternykh, Yoji Koike

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number114708
JournalJournal of the Physical Society of Japan
Volume88
Issue number11
DOIs
Publication statusPublished - Jan 1 2019

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thermal conductivity
phase diagrams
phonons
temperature distribution
magnetic fields
mean free path
temperature dependence
single crystals
scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kawamata, T., Sugawara, N., Haidar, S. M., Adachi, T., Noji, T., Kudo, K., ... Koike, Y. (2019). Thermal conductivity and magnetic phase diagram of CuB2O4 Journal of the Physical Society of Japan, 88(11), [114708]. https://doi.org/10.7566/JPSJ.88.114708

Thermal conductivity and magnetic phase diagram of CuB2O4 . / Kawamata, Takayuki; Sugawara, Naoki; Haidar, Siyed Mohammad; Adachi, Tadashi; Noji, Takashi; Kudo, Kazutaka; Kobayashi, Norio; Fujii, Yutaka; Kikuchi, Hikomitsu; Chiba, Meiro; Petrakovskii, German A.; Popov, Mikhail A.; Bezmaternykh, Leonard N.; Koike, Yoji.

In: Journal of the Physical Society of Japan, Vol. 88, No. 11, 114708, 01.01.2019.

Research output: Contribution to journalArticle

Kawamata, T, Sugawara, N, Haidar, SM, Adachi, T, Noji, T, Kudo, K, Kobayashi, N, Fujii, Y, Kikuchi, H, Chiba, M, Petrakovskii, GA, Popov, MA, Bezmaternykh, LN & Koike, Y 2019, 'Thermal conductivity and magnetic phase diagram of CuB2O4 ', Journal of the Physical Society of Japan, vol. 88, no. 11, 114708. https://doi.org/10.7566/JPSJ.88.114708
Kawamata, Takayuki ; Sugawara, Naoki ; Haidar, Siyed Mohammad ; Adachi, Tadashi ; Noji, Takashi ; Kudo, Kazutaka ; Kobayashi, Norio ; Fujii, Yutaka ; Kikuchi, Hikomitsu ; Chiba, Meiro ; Petrakovskii, German A. ; Popov, Mikhail A. ; Bezmaternykh, Leonard N. ; Koike, Yoji. / Thermal conductivity and magnetic phase diagram of CuB2O4 In: Journal of the Physical Society of Japan. 2019 ; Vol. 88, No. 11.
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