Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6

Abstract This investigation reports on anisotropy in the magnetic interaction, lattice-orbital coupling and degree of phonon softening in single crystal Ni3TeO6 (NTO) using temperature- and polarization-dependent X-ray absorption spectroscopic techniques. The magnetic field-cooled and zero-field-coo...

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Autores principales:	Anirudha Ghosh, K.-H. Chen, X.-S. Qiu, S. H. Hsieh, Y. C. Shao, C. H. Du, H. T. Wang, Y. Y. Chin, J. W. Chiou, Sekhar C. Ray, H. M. Tsai, C. W. Pao, H. J. Lin, J. F. Lee, Raman Sankar, F. C. Chou, W. F. Pong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Orbit-lattice Coupling X-ray Magnetic Circular Dichroism (XMCD) XMCD Spectra NiO6 Octahedra Spin Axis Parallel Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e3223401515543e58bcc0019b3657f30
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spelling	oai:doaj.org-article:e3223401515543e58bcc0019b3657f302021-12-02T15:08:25ZAnisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO610.1038/s41598-018-33976-w2045-2322https://doaj.org/article/e3223401515543e58bcc0019b3657f302018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33976-whttps://doaj.org/toc/2045-2322Abstract This investigation reports on anisotropy in the magnetic interaction, lattice-orbital coupling and degree of phonon softening in single crystal Ni3TeO6 (NTO) using temperature- and polarization-dependent X-ray absorption spectroscopic techniques. The magnetic field-cooled and zero-field-cooled measurements and temperature-dependent Ni L 3,2-edge X-ray magnetic circular dichroism spectra of NTO reveal a weak Ni-Ni ferromagnetic interaction close to ~60 K (T SO: temperature of the onset of spin ordering) with a net alignment of Ni spins (the uncompensated components of the Ni moments) along the crystallographic c-axis, which is absent from the ab-plane. Below the Néel temperature, T N~ 52 K, NTO is stable in the antiferromagnetic state with its spin axis parallel to the c-axis. The Ni L 3,2-edge X-ray linear dichroism results indicate that above T SO, the Ni 3d e g electrons preferentially occupy the out-of-plane 3d 3z 2 −r 2 orbitals and switch to the in-plane 3d x 2 −y 2 orbitals below T SO. The inherent distortion of the NiO6 octahedra and anisotropic nearest-neighbor Ni-O bond lengths between the c-axis and the ab-plane of NTO, followed by anomalous Debye-Waller factors and orbital-lattice in conjunction with spin-phonon couplings, stabilize the occupied out-of-plane (3d 3z 2 −r 2) and in-plane (3d x 2 −y 2) Ni e g orbitals above and below T SO, respectively.Anirudha GhoshK.-H. ChenX.-S. QiuS. H. HsiehY. C. ShaoC. H. DuH. T. WangY. Y. ChinJ. W. ChiouSekhar C. RayH. M. TsaiC. W. PaoH. J. LinJ. F. LeeRaman SankarF. C. ChouW. F. PongNature PortfolioarticleOrbit-lattice CouplingX-ray Magnetic Circular Dichroism (XMCD)XMCD SpectraNiO6 OctahedraSpin Axis ParallelMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Orbit-lattice Coupling X-ray Magnetic Circular Dichroism (XMCD) XMCD Spectra NiO6 Octahedra Spin Axis Parallel Medicine R Science Q
spellingShingle	Orbit-lattice Coupling X-ray Magnetic Circular Dichroism (XMCD) XMCD Spectra NiO6 Octahedra Spin Axis Parallel Medicine R Science Q Anirudha Ghosh K.-H. Chen X.-S. Qiu S. H. Hsieh Y. C. Shao C. H. Du H. T. Wang Y. Y. Chin J. W. Chiou Sekhar C. Ray H. M. Tsai C. W. Pao H. J. Lin J. F. Lee Raman Sankar F. C. Chou W. F. Pong Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
description	Abstract This investigation reports on anisotropy in the magnetic interaction, lattice-orbital coupling and degree of phonon softening in single crystal Ni3TeO6 (NTO) using temperature- and polarization-dependent X-ray absorption spectroscopic techniques. The magnetic field-cooled and zero-field-cooled measurements and temperature-dependent Ni L 3,2-edge X-ray magnetic circular dichroism spectra of NTO reveal a weak Ni-Ni ferromagnetic interaction close to ~60 K (T SO: temperature of the onset of spin ordering) with a net alignment of Ni spins (the uncompensated components of the Ni moments) along the crystallographic c-axis, which is absent from the ab-plane. Below the Néel temperature, T N~ 52 K, NTO is stable in the antiferromagnetic state with its spin axis parallel to the c-axis. The Ni L 3,2-edge X-ray linear dichroism results indicate that above T SO, the Ni 3d e g electrons preferentially occupy the out-of-plane 3d 3z 2 −r 2 orbitals and switch to the in-plane 3d x 2 −y 2 orbitals below T SO. The inherent distortion of the NiO6 octahedra and anisotropic nearest-neighbor Ni-O bond lengths between the c-axis and the ab-plane of NTO, followed by anomalous Debye-Waller factors and orbital-lattice in conjunction with spin-phonon couplings, stabilize the occupied out-of-plane (3d 3z 2 −r 2) and in-plane (3d x 2 −y 2) Ni e g orbitals above and below T SO, respectively.
format	article
author	Anirudha Ghosh K.-H. Chen X.-S. Qiu S. H. Hsieh Y. C. Shao C. H. Du H. T. Wang Y. Y. Chin J. W. Chiou Sekhar C. Ray H. M. Tsai C. W. Pao H. J. Lin J. F. Lee Raman Sankar F. C. Chou W. F. Pong
author_facet	Anirudha Ghosh K.-H. Chen X.-S. Qiu S. H. Hsieh Y. C. Shao C. H. Du H. T. Wang Y. Y. Chin J. W. Chiou Sekhar C. Ray H. M. Tsai C. W. Pao H. J. Lin J. F. Lee Raman Sankar F. C. Chou W. F. Pong
author_sort	Anirudha Ghosh
title	Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
title_short	Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
title_full	Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
title_fullStr	Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
title_full_unstemmed	Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
title_sort	anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal ni3teo6
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/e3223401515543e58bcc0019b3657f30
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Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6

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