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Sm valence determination of Sm-based intermetallics using $$^{149}$$Sm M$"{o}$ssbauer and Sm L$$_{rm III}$$-edge X-ray absorption spectroscopies

Tsutsui, Satoshi; Higashinaka, Ryuji*; Nakamura, Raito*; Fujiwara, Kosuke*; Nakamura, Jin*; Kobayashi, Yoshio*; Ito, Takashi   ; Yoda, Yoshitaka*; Kato, Kazuo*; Nitta, Kiyofumi*; Kawamura, Naomi*; Mizumaki, Masaichiro*; Matsuda, Tatsuma*; Aoki, Yuji*

$$^{149}$$Sm synchrotron-radiation-based M$"{o}$ssbauer spectroscopy was performed in Sm-based intermetallics having a cubic crystal structure, Sm$$_{3}Tr_{4}$$Ge$$_{13}$$, SmB$$_{6}$$, SmBe$$_{13}$$, and Sm$$Tr_{2}$$Al$$_{20}$$ ($$Tr$$ = transition metals). In spite of the difference of the local structure around the Sm sites, the observed M$"{o}$ssbauer spectra consist of a single line at 300 K. On the other hand, Sm L$$_{rm III}$$-edge X-ray absorption spectra consist of two components, suggesting Sm$$^{2+}$$ and Sm$$^{3+}$$ states. Difference of the number of the spectral components between the M$"{o}$ssbauer spectroscopy and X-ray absorption spectroscopy is caused by the difference of the time window in the scattering process of these measurements. Correlation between the isomer shifts in the M$"{o}$ssbauer spectroscopy and average Sm valence states estimated from the X-ray absorption spectroscopy exhibits a linear correlation.

Language

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English

Journal

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Hyperfine Interactions

Volume

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242

Number

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1

Pages

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p.32_1 - 32_10

Publication Year/Month

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2021/12

Meeting title

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International Conference on the Applications of the M$"{o}$ssbauer Effect (ICAME 2021)

Held date

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2021/09

Location (city)

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Brasov

Location (country)

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Romania

Patent information

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PDF

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Paper URL

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https://doi.org/10.1007/s10751-021-01759-x

DOI for research data

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Link to research data related to this paper/report.

Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:81.31

Category:Physics, Atomic, Molecular & Chemical

Altmetrics

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