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Elastic Softening in HoFe<sub>2</sub>Al<sub>10</sub> due to the Quadrupole Interaction under an Orthorhombic Crystal Electric Field
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- Shuhei Kamikawa
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Isao Ishii
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Yoshihito Noguchi
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Hiroki Goto
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Takahiro K. Fujita
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Fumiya Nakagawa
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Hiroshi Tanida
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Masafumi Sera
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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- Takashi Suzuki
- Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
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Description
To investigate 4f electronic states in HoFe2Al10 under an orthorhombic crystal electric field (CEF), we measured the specific heat, magnetic susceptibility, magnetization, and elastic modulus of single-crystalline samples. We found elastic softening of the transverse elastic moduli C55 and C66 below 20 and 130 K, respectively. With further decreasing temperature, C66 shows further elastic softening below 5 K. We observed two Schottky peaks in the specific heat at 2.2 and 20 K and small anisotropy of the magnetic susceptibility and magnetization in the paramagnetic region. By analyzing these experimental data, we obtained the CEF parameters of HoFe2Al10. From the analysis, we clarified that the softening of C55 and C66 originates from indirect quadrupole interactions of Ozx and Oxy, and propose that the overall CEF splitting is about 85 K.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 85 (7), 074604-, 2016-07-15
Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1360566399835026816
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- NII Article ID
- 210000134010
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- ISSN
- 13474073
- 00319015
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- Article Type
- journal article
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- Data Source
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- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE