Orbital reorientation in MnV2O4 observed by V NMR

Abstract The simultaneous occurrence of the structural and magnetic phase transitions observed in MnV2O4 is one clear example of strong interplay among the spin, orbital and lattice degrees of freedom. The structure of MnV2O4 is switched by the magnetic field and the linear magnetostriction is very...

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Autores principales:	Euna Jo, Sejun Park, Jooseop Lee, Soonchil Lee, Jeong Hyun Shim, Takehito Suzuki, Takuro Katsufuji
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/67faaf974a694dc5a085cb1b49c8ae75
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spelling	oai:doaj.org-article:67faaf974a694dc5a085cb1b49c8ae752021-12-02T15:05:34ZOrbital reorientation in MnV2O4 observed by V NMR10.1038/s41598-017-02015-52045-2322https://doaj.org/article/67faaf974a694dc5a085cb1b49c8ae752017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02015-5https://doaj.org/toc/2045-2322Abstract The simultaneous occurrence of the structural and magnetic phase transitions observed in MnV2O4 is one clear example of strong interplay among the spin, orbital and lattice degrees of freedom. The structure of MnV2O4 is switched by the magnetic field and the linear magnetostriction is very high. The orbital order mediates the interaction between the spin and the lattice generating these phenomena. In this work, we present experimental evidence of an orbital order in MnV2O4 and its reorientation under a rotating magnetic field as obtained by nuclear magnetic resonance(NMR). The shift in the resonance frequency of the V NMR spectrum is symmetrical with respect to 45° as an external magnetic field of 7 T rotates from the c-axis to the b-axis, indicating that the initial easy axis flips to the orthogonal direction most parallel to the field direction. The spectrum of V3+ ions splits into four peaks with a maximum shift of 40 MHz. Our analysis revealed that this is the combined effect of the anisotropic hyperfine field due to an ordered orbital and the dipolar hyperfine field. Reorientation of the orbital order in response to an external magnetic field accompanies the macroscopically observed magnetostriction in MnV2O4.Euna JoSejun ParkJooseop LeeSoonchil LeeJeong Hyun ShimTakehito SuzukiTakuro KatsufujiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Euna Jo Sejun Park Jooseop Lee Soonchil Lee Jeong Hyun Shim Takehito Suzuki Takuro Katsufuji Orbital reorientation in MnV2O4 observed by V NMR
description	Abstract The simultaneous occurrence of the structural and magnetic phase transitions observed in MnV2O4 is one clear example of strong interplay among the spin, orbital and lattice degrees of freedom. The structure of MnV2O4 is switched by the magnetic field and the linear magnetostriction is very high. The orbital order mediates the interaction between the spin and the lattice generating these phenomena. In this work, we present experimental evidence of an orbital order in MnV2O4 and its reorientation under a rotating magnetic field as obtained by nuclear magnetic resonance(NMR). The shift in the resonance frequency of the V NMR spectrum is symmetrical with respect to 45° as an external magnetic field of 7 T rotates from the c-axis to the b-axis, indicating that the initial easy axis flips to the orthogonal direction most parallel to the field direction. The spectrum of V3+ ions splits into four peaks with a maximum shift of 40 MHz. Our analysis revealed that this is the combined effect of the anisotropic hyperfine field due to an ordered orbital and the dipolar hyperfine field. Reorientation of the orbital order in response to an external magnetic field accompanies the macroscopically observed magnetostriction in MnV2O4.
format	article
author	Euna Jo Sejun Park Jooseop Lee Soonchil Lee Jeong Hyun Shim Takehito Suzuki Takuro Katsufuji
author_facet	Euna Jo Sejun Park Jooseop Lee Soonchil Lee Jeong Hyun Shim Takehito Suzuki Takuro Katsufuji
author_sort	Euna Jo
title	Orbital reorientation in MnV2O4 observed by V NMR
title_short	Orbital reorientation in MnV2O4 observed by V NMR
title_full	Orbital reorientation in MnV2O4 observed by V NMR
title_fullStr	Orbital reorientation in MnV2O4 observed by V NMR
title_full_unstemmed	Orbital reorientation in MnV2O4 observed by V NMR
title_sort	orbital reorientation in mnv2o4 observed by v nmr
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/67faaf974a694dc5a085cb1b49c8ae75
work_keys_str_mv	AT eunajo orbitalreorientationinmnv2o4observedbyvnmr AT sejunpark orbitalreorientationinmnv2o4observedbyvnmr AT jooseoplee orbitalreorientationinmnv2o4observedbyvnmr AT soonchillee orbitalreorientationinmnv2o4observedbyvnmr AT jeonghyunshim orbitalreorientationinmnv2o4observedbyvnmr AT takehitosuzuki orbitalreorientationinmnv2o4observedbyvnmr AT takurokatsufuji orbitalreorientationinmnv2o4observedbyvnmr
_version_	1718388769467400192

Orbital reorientation in MnV2O4 observed by V NMR

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