Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl1-xFexB4 (x =0.115) at low temperatures and high magnetic fields

T. Terashima; Y. H. Matsuda; K. Kuga; S. Suzuki; Y. Matsumoto; S. Nakatsuji; A. Kondo; K. Kindo; N. Kawamura; M. Mizumaki; T. Inami

doi:10.1088/1742-6596/592/1/012020

Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl_1-xFe_xB₄ (x =0.115) at low temperatures and high magnetic fields

T. Terashima, Y. H. Matsuda, K. Kuga, S. Suzuki, Y. Matsumoto, S. Nakatsuji, A. Kondo, K. Kindo, N. Kawamura, M. Mizumaki, T. Inami

Department of Materials Science and Technology

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Valence fluctuation phenomena in rare-earth intermetallic compounds have attracted attention because the quantum criticality of the valence transition has been proposed theoretically. Recently, it was found that β-YbAlB₄ shows quantum criticality without tuning and has a strong mixed-valence state. In this study, we measured the magnetization curve and X-ray magnetoabsorption in α-YbAl_1-xFe_xB₄ (x= 0.115), which is a locally isostructural polymorph of β-YbAlB₄. The magnetization and X-ray experiments were performed in fields up to 55 and 40 T, respectively. A small increase in the Yb valence was observed at fields where the magnetization curve exhibited a change in slope.

Original language	English
Article number	012020
Journal	Journal of Physics: Conference Series
Volume	592
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/592/1/012020
Publication status	Published - 2014
Event	2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France Duration: 7 Jul 2014 → 14 Jul 2014

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Terashima, T., Matsuda, Y. H., Kuga, K., Suzuki, S., Matsumoto, Y., Nakatsuji, S., Kondo, A., Kindo, K., Kawamura, N., Mizumaki, M., & Inami, T. (2014). Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl_1-xFe_xB₄ (x =0.115) at low temperatures and high magnetic fields. Journal of Physics: Conference Series, 592(1), Article 012020. https://doi.org/10.1088/1742-6596/592/1/012020

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title = "Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl1-xFexB4 (x =0.115) at low temperatures and high magnetic fields",

abstract = "Valence fluctuation phenomena in rare-earth intermetallic compounds have attracted attention because the quantum criticality of the valence transition has been proposed theoretically. Recently, it was found that β-YbAlB4 shows quantum criticality without tuning and has a strong mixed-valence state. In this study, we measured the magnetization curve and X-ray magnetoabsorption in α-YbAl1-xFexB4 (x= 0.115), which is a locally isostructural polymorph of β-YbAlB4. The magnetization and X-ray experiments were performed in fields up to 55 and 40 T, respectively. A small increase in the Yb valence was observed at fields where the magnetization curve exhibited a change in slope.",

author = "T. Terashima and Matsuda, {Y. H.} and K. Kuga and S. Suzuki and Y. Matsumoto and S. Nakatsuji and A. Kondo and K. Kindo and N. Kawamura and M. Mizumaki and T. Inami",

year = "2014",

doi = "10.1088/1742-6596/592/1/012020",

language = "English",

volume = "592",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

note = "2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 ; Conference date: 07-07-2014 Through 14-07-2014",

}

Terashima, T, Matsuda, YH, Kuga, K, Suzuki, S, Matsumoto, Y, Nakatsuji, S, Kondo, A, Kindo, K, Kawamura, N, Mizumaki, M & Inami, T 2014, 'Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl_1-xFe_xB₄ (x =0.115) at low temperatures and high magnetic fields', Journal of Physics: Conference Series, vol. 592, no. 1, 012020. https://doi.org/10.1088/1742-6596/592/1/012020

TY - JOUR

T1 - Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl1-xFexB4 (x =0.115) at low temperatures and high magnetic fields

AU - Terashima, T.

AU - Matsuda, Y. H.

AU - Kuga, K.

AU - Suzuki, S.

AU - Matsumoto, Y.

AU - Nakatsuji, S.

AU - Kondo, A.

AU - Kindo, K.

AU - Kawamura, N.

AU - Mizumaki, M.

AU - Inami, T.

PY - 2014

Y1 - 2014

N2 - Valence fluctuation phenomena in rare-earth intermetallic compounds have attracted attention because the quantum criticality of the valence transition has been proposed theoretically. Recently, it was found that β-YbAlB4 shows quantum criticality without tuning and has a strong mixed-valence state. In this study, we measured the magnetization curve and X-ray magnetoabsorption in α-YbAl1-xFexB4 (x= 0.115), which is a locally isostructural polymorph of β-YbAlB4. The magnetization and X-ray experiments were performed in fields up to 55 and 40 T, respectively. A small increase in the Yb valence was observed at fields where the magnetization curve exhibited a change in slope.

AB - Valence fluctuation phenomena in rare-earth intermetallic compounds have attracted attention because the quantum criticality of the valence transition has been proposed theoretically. Recently, it was found that β-YbAlB4 shows quantum criticality without tuning and has a strong mixed-valence state. In this study, we measured the magnetization curve and X-ray magnetoabsorption in α-YbAl1-xFexB4 (x= 0.115), which is a locally isostructural polymorph of β-YbAlB4. The magnetization and X-ray experiments were performed in fields up to 55 and 40 T, respectively. A small increase in the Yb valence was observed at fields where the magnetization curve exhibited a change in slope.

UR - http://www.scopus.com/inward/record.url?scp=84925326139&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/592/1/012020

DO - 10.1088/1742-6596/592/1/012020

M3 - Conference article

AN - SCOPUS:84925326139

SN - 1742-6588

VL - 592

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012020

T2 - 2014 International Conference on Strongly Correlated Electron Systems, SCES 2014

Y2 - 7 July 2014 through 14 July 2014

ER -

Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl_1-xFe_xB₄ (x =0.115) at low temperatures and high magnetic fields

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