Specific heat of field-dependent magnetic orderings in HoNi2B2C

Jae Hyuk Choi, Hyeonjin Doh, Eun Mi Choi, Heon Jung Kim, Sung Ik Lee, Tatsuharu Yamamoto, Tatsuya Kawae, Kazuyoshi Takeda

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Abstract

We have investigated the low-temperature specific heat of HoNi2B2C down to T = 1 K in various magnetic fields from 0 T to 5 T. At zero field, the specific heat exhibits a large peak at TN = 5.1 K, which is due to commensurate antiferromagnetic ordering, and other smaller peak at T1 = 5.5 K, which is related to incommensurate ordering. As the held is increased up to 0.5 T, the first peak broadens and moves to a lower temperature, while the other peak at T1 moves to a higher temperature, which indicates that the phase between TN and T1 is more favored in magnetic fields. Among possible candidates for the phase, the a-axis modulation phase, which is an extension of a low temperature metamagnetic state, is the most probable. In the high-field region above 1 T, the two-peak feature is replaced by a broad-hill one that fades away with increasing fields, which is the typical smearing feature of the magnetic order at high fields.

Original languageEnglish
Pages (from-to)3037-3041
Number of pages5
JournalJournal of the Physical Society of Japan
Volume70
Issue number10
DOIs
Publication statusPublished - Oct 1 2001

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specific heat
magnetic fields
phase modulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Choi, J. H., Doh, H., Choi, E. M., Kim, H. J., Lee, S. I., Yamamoto, T., ... Takeda, K. (2001). Specific heat of field-dependent magnetic orderings in HoNi2B2C. Journal of the Physical Society of Japan, 70(10), 3037-3041. https://doi.org/10.1143/JPSJ.70.3037

Specific heat of field-dependent magnetic orderings in HoNi2B2C. / Choi, Jae Hyuk; Doh, Hyeonjin; Choi, Eun Mi; Kim, Heon Jung; Lee, Sung Ik; Yamamoto, Tatsuharu; Kawae, Tatsuya; Takeda, Kazuyoshi.

In: Journal of the Physical Society of Japan, Vol. 70, No. 10, 01.10.2001, p. 3037-3041.

Research output: Contribution to journalArticle

Choi, JH, Doh, H, Choi, EM, Kim, HJ, Lee, SI, Yamamoto, T, Kawae, T & Takeda, K 2001, 'Specific heat of field-dependent magnetic orderings in HoNi2B2C', Journal of the Physical Society of Japan, vol. 70, no. 10, pp. 3037-3041. https://doi.org/10.1143/JPSJ.70.3037
Choi, Jae Hyuk ; Doh, Hyeonjin ; Choi, Eun Mi ; Kim, Heon Jung ; Lee, Sung Ik ; Yamamoto, Tatsuharu ; Kawae, Tatsuya ; Takeda, Kazuyoshi. / Specific heat of field-dependent magnetic orderings in HoNi2B2C. In: Journal of the Physical Society of Japan. 2001 ; Vol. 70, No. 10. pp. 3037-3041.
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AU - Yamamoto, Tatsuharu

AU - Kawae, Tatsuya

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N2 - We have investigated the low-temperature specific heat of HoNi2B2C down to T = 1 K in various magnetic fields from 0 T to 5 T. At zero field, the specific heat exhibits a large peak at TN = 5.1 K, which is due to commensurate antiferromagnetic ordering, and other smaller peak at T1 = 5.5 K, which is related to incommensurate ordering. As the held is increased up to 0.5 T, the first peak broadens and moves to a lower temperature, while the other peak at T1 moves to a higher temperature, which indicates that the phase between TN and T1 is more favored in magnetic fields. Among possible candidates for the phase, the a-axis modulation phase, which is an extension of a low temperature metamagnetic state, is the most probable. In the high-field region above 1 T, the two-peak feature is replaced by a broad-hill one that fades away with increasing fields, which is the typical smearing feature of the magnetic order at high fields.

AB - We have investigated the low-temperature specific heat of HoNi2B2C down to T = 1 K in various magnetic fields from 0 T to 5 T. At zero field, the specific heat exhibits a large peak at TN = 5.1 K, which is due to commensurate antiferromagnetic ordering, and other smaller peak at T1 = 5.5 K, which is related to incommensurate ordering. As the held is increased up to 0.5 T, the first peak broadens and moves to a lower temperature, while the other peak at T1 moves to a higher temperature, which indicates that the phase between TN and T1 is more favored in magnetic fields. Among possible candidates for the phase, the a-axis modulation phase, which is an extension of a low temperature metamagnetic state, is the most probable. In the high-field region above 1 T, the two-peak feature is replaced by a broad-hill one that fades away with increasing fields, which is the typical smearing feature of the magnetic order at high fields.

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