Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO3

Shin Ichi Shamoto; Kwangwoo Shin; Mitsuhiro Akatsu; Masaki Imai; Daichi Ueta; Tetsuya R. Yokoo; Yuichi Nemoto; Amer M.A. Hassan; Lieh Jeng Chang; Jun'ichi Ieda; Jae Ho Chung

doi:10.1063/5.0273424

Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO₃

Shin Ichi Shamoto^*
, Kwangwoo Shin
, Mitsuhiro Akatsu
, Masaki Imai
, Daichi Ueta
, Tetsuya R. Yokoo
, Yuichi Nemoto
, Amer M.A. Hassan
, Lieh Jeng Chang
, Jun'ichi Ieda
, Jae Ho Chung

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

FeTiO₃ is an ilmenite antiferromagnetic insulator containing Fe²⁺, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300% in FeTiO₃ crystals at low temperatures. The pronounced enhancement is attributed to strong spin-lattice coupling of Fe²⁺ in FeTiO₃. This effect disappears above 35 K, suggesting that the energy splitting of Fe²⁺ levels induced by spin-orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.

Original language	English
Article number	132403
Journal	Applied Physics Letters
Volume	127
Issue number	13
DOIs	https://doi.org/10.1063/5.0273424
Publication status	Published - 2025 Sept 30

Bibliographical note

Publisher Copyright:
© 2025 Author(s).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/5.0273424

Cite this

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title = "Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO3",

abstract = "FeTiO3 is an ilmenite antiferromagnetic insulator containing Fe2+, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300\% in FeTiO3 crystals at low temperatures. The pronounced enhancement is attributed to strong spin-lattice coupling of Fe2+ in FeTiO3. This effect disappears above 35 K, suggesting that the energy splitting of Fe2+ levels induced by spin-orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.",

author = "Shamoto, \{Shin Ichi\} and Kwangwoo Shin and Mitsuhiro Akatsu and Masaki Imai and Daichi Ueta and Yokoo, \{Tetsuya R.\} and Yuichi Nemoto and Hassan, \{Amer M.A.\} and Chang, \{Lieh Jeng\} and Jun'ichi Ieda and Chung, \{Jae Ho\}",

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doi = "10.1063/5.0273424",

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T1 - Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO3

AU - Shamoto, Shin Ichi

AU - Shin, Kwangwoo

AU - Akatsu, Mitsuhiro

AU - Imai, Masaki

AU - Ueta, Daichi

AU - Yokoo, Tetsuya R.

AU - Nemoto, Yuichi

AU - Hassan, Amer M.A.

AU - Chang, Lieh Jeng

AU - Ieda, Jun'ichi

AU - Chung, Jae Ho

PY - 2025/9/30

Y1 - 2025/9/30

N2 - FeTiO3 is an ilmenite antiferromagnetic insulator containing Fe2+, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300% in FeTiO3 crystals at low temperatures. The pronounced enhancement is attributed to strong spin-lattice coupling of Fe2+ in FeTiO3. This effect disappears above 35 K, suggesting that the energy splitting of Fe2+ levels induced by spin-orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.

AB - FeTiO3 is an ilmenite antiferromagnetic insulator containing Fe2+, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300% in FeTiO3 crystals at low temperatures. The pronounced enhancement is attributed to strong spin-lattice coupling of Fe2+ in FeTiO3. This effect disappears above 35 K, suggesting that the energy splitting of Fe2+ levels induced by spin-orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.

UR - https://www.scopus.com/pages/publications/105017372479

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DO - 10.1063/5.0273424

M3 - Article

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SN - 0003-6951

VL - 127

JO - Applied Physics Letters

JF - Applied Physics Letters

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