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Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6
- Source :
- Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018), Scientific Reports
- Publication Year :
- 2018
- Publisher :
- Nature Portfolio, 2018.
-
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 L3,2-edge X-ray magnetic circular dichroism spectra of NTO reveal a weak Ni-Ni ferromagnetic interaction close to ~60 K (TSO: 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, TN~ 52 K, NTO is stable in the antiferromagnetic state with its spin axis parallel to the c-axis. The Ni L3,2-edge X-ray linear dichroism results indicate that above TSO, the Ni 3d eg electrons preferentially occupy the out-of-plane 3d3z2−r2 orbitals and switch to the in-plane 3dx2−y2 orbitals below TSO. 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 (3d3z2−r2) and in-plane (3dx2−y2) Ni eg orbitals above and below TSO, respectively.
- Subjects :
- Materials science
Science
02 engineering and technology
Linear dichroism
01 natural sciences
Spin Axis Parallel
Article
NiO6 Octahedra
0103 physical sciences
Antiferromagnetism
010306 general physics
Anisotropy
XMCD Spectra
Multidisciplinary
Condensed matter physics
Magnetic circular dichroism
021001 nanoscience & nanotechnology
X-ray Magnetic Circular Dichroism (XMCD)
Bond length
Ferromagnetism
Orbit-lattice Coupling
Medicine
Condensed Matter::Strongly Correlated Electrons
0210 nano-technology
Single crystal
Néel temperature
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 8
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....6a521cd51962f9680de52fa1df09d15d