Local and long-range order and the influence of applied magnetic field on single-crystalline NiSb2O6

Local and long-range order and the influence of applied magnetic field on single-crystalline NiSb2O6 The magnetic and thermal properties of single-crystalline NiSb2O6 are reported. The Ni2+ ions exhibit local magnetic order below ∼50 K followed by long-range antiferromagnetic order below TN=6.7 K. Analysis of the magnetic susceptibility data using the one-dimensional Heisenberg model with spin S=1 results in a magnetic exchange coupling J||/kB∼26.0(1) K. TN is observed to either increase or decrease depending on whether field is applied perpendicular or parallel to the magnetic moment axis. A two-sublattice magnetic structure, with the axis of alignment alternating by 90∘ between neighboring layers along the crystallographic c axis, is argued to result in two magnetic transition temperatures for certain magnetic field directions, which agrees well with theory. This leads to a highly anisotropic magnetocaloric effect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Local and long-range order and the influence of applied magnetic field on single-crystalline NiSb2O6

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Local and long-range order and the influence of applied magnetic field on single-crystalline NiSb2O6

Abstract

The magnetic and thermal properties of single-crystalline NiSb2O6 are reported. The Ni2+ ions exhibit local magnetic order below ∼50 K followed by long-range antiferromagnetic order below TN=6.7 K. Analysis of the magnetic susceptibility data using the one-dimensional Heisenberg model with spin S=1 results in a magnetic exchange coupling J||/kB∼26.0(1) K. TN is observed to either increase or decrease depending on whether field is applied perpendicular or parallel to the magnetic moment axis. A two-sublattice magnetic structure, with the axis of alignment alternating by 90∘ between neighboring layers along the crystallographic c axis, is argued to result in two magnetic transition temperatures for certain magnetic field directions, which agrees well with theory. This leads to a highly anisotropic magnetocaloric effect.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.024433
Publisher site
See Article on Publisher Site

Abstract

The magnetic and thermal properties of single-crystalline NiSb2O6 are reported. The Ni2+ ions exhibit local magnetic order below ∼50 K followed by long-range antiferromagnetic order below TN=6.7 K. Analysis of the magnetic susceptibility data using the one-dimensional Heisenberg model with spin S=1 results in a magnetic exchange coupling J||/kB∼26.0(1) K. TN is observed to either increase or decrease depending on whether field is applied perpendicular or parallel to the magnetic moment axis. A two-sublattice magnetic structure, with the axis of alignment alternating by 90∘ between neighboring layers along the crystallographic c axis, is argued to result in two magnetic transition temperatures for certain magnetic field directions, which agrees well with theory. This leads to a highly anisotropic magnetocaloric effect.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 24, 2017

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