Transformation of 5I8→5F5 Ho absorption band in Ho0.75Nd0.25Fe3(BO3)4 crystal during spin-reorientation transition

A. V. Malakhovskii; A. L. Sukhachev; V. V. Sokolov; I. A. Gudim; V. R. Kuchesheva-Titova

doi:10.1016/j.physb.2023.414706

Transformation of ⁵I₈→⁵F₅ Ho absorption band in Ho_0.75Nd_0.25Fe₃(BO₃)₄ crystal during spin-reorientation transition

A. V. Malakhovskii, A. L. Sukhachev, V. V. Sokolov, I. A. Gudim, V. R. Kuchesheva-Titova

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

1 Scopus citations

Abstract

Polarized absorption spectra of crystal Ho_0.75Nd_0.25Fe₃(BO₃)₄ in the region of the ⁵I₈→⁵F₅ absorption band of Ho ions were investigated depending on temperature in the range of 5–20 K. Absorption spectra are decomposed into components of the Lorentz form. The spin-reorientation phase transition was detected at 6.9 K. The observed line position shifts during the reorientation transition were different for different lines, which indicated different local magnetic anisotropy of the Ho ion in its excited states. Significant changes in absorption line intensities as a function of temperature were observed during the reorientation transition and above. These were explained as a consequence of the change in even components of the local crystal field in excited states. These components mix the closely spaced 4f states. Distortion of local symmetry in the ground state was detected at one of the electron transitions.

Original language	English
Article number	414706
Journal	Physica B: Condensed Matter
Volume	654
DOIs	https://doi.org/10.1016/j.physb.2023.414706
State	Published - 1 Apr 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Local properties in the optically excited states
Magnetic reorientation transition
Optical f-f transitions

Access to Document

10.1016/j.physb.2023.414706

Cite this

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title = "Transformation of 5I8→5F5 Ho absorption band in Ho0.75Nd0.25Fe3(BO3)4 crystal during spin-reorientation transition",

abstract = "Polarized absorption spectra of crystal Ho0.75Nd0.25Fe3(BO3)4 in the region of the 5I8→5F5 absorption band of Ho ions were investigated depending on temperature in the range of 5–20 K. Absorption spectra are decomposed into components of the Lorentz form. The spin-reorientation phase transition was detected at 6.9 K. The observed line position shifts during the reorientation transition were different for different lines, which indicated different local magnetic anisotropy of the Ho ion in its excited states. Significant changes in absorption line intensities as a function of temperature were observed during the reorientation transition and above. These were explained as a consequence of the change in even components of the local crystal field in excited states. These components mix the closely spaced 4f states. Distortion of local symmetry in the ground state was detected at one of the electron transitions.",

keywords = "Local properties in the optically excited states, Magnetic reorientation transition, Optical f-f transitions",

author = "Malakhovskii, {A. V.} and Sukhachev, {A. L.} and Sokolov, {V. V.} and Gudim, {I. A.} and Kuchesheva-Titova, {V. R.}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

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doi = "10.1016/j.physb.2023.414706",

language = "אנגלית",

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T1 - Transformation of 5I8→5F5 Ho absorption band in Ho0.75Nd0.25Fe3(BO3)4 crystal during spin-reorientation transition

AU - Malakhovskii, A. V.

AU - Sukhachev, A. L.

AU - Sokolov, V. V.

AU - Gudim, I. A.

AU - Kuchesheva-Titova, V. R.

PY - 2023/4/1

Y1 - 2023/4/1

N2 - Polarized absorption spectra of crystal Ho0.75Nd0.25Fe3(BO3)4 in the region of the 5I8→5F5 absorption band of Ho ions were investigated depending on temperature in the range of 5–20 K. Absorption spectra are decomposed into components of the Lorentz form. The spin-reorientation phase transition was detected at 6.9 K. The observed line position shifts during the reorientation transition were different for different lines, which indicated different local magnetic anisotropy of the Ho ion in its excited states. Significant changes in absorption line intensities as a function of temperature were observed during the reorientation transition and above. These were explained as a consequence of the change in even components of the local crystal field in excited states. These components mix the closely spaced 4f states. Distortion of local symmetry in the ground state was detected at one of the electron transitions.

AB - Polarized absorption spectra of crystal Ho0.75Nd0.25Fe3(BO3)4 in the region of the 5I8→5F5 absorption band of Ho ions were investigated depending on temperature in the range of 5–20 K. Absorption spectra are decomposed into components of the Lorentz form. The spin-reorientation phase transition was detected at 6.9 K. The observed line position shifts during the reorientation transition were different for different lines, which indicated different local magnetic anisotropy of the Ho ion in its excited states. Significant changes in absorption line intensities as a function of temperature were observed during the reorientation transition and above. These were explained as a consequence of the change in even components of the local crystal field in excited states. These components mix the closely spaced 4f states. Distortion of local symmetry in the ground state was detected at one of the electron transitions.

KW - Local properties in the optically excited states

KW - Magnetic reorientation transition

KW - Optical f-f transitions

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