Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2

We report muon-spin rotation, heat capacity, magnetization, and ac magnetic susceptibility measurements of the magnetic properties of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long-range magnetic order below TN=19.5 K. Rapid muon depolarization, persisting from TN to about...

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Asıl Yazarlar: Baker, P, Lancaster, T, Blundell, S, Brooks, M, Hayes, W, Prabhakaran, D, Pratt, F
Materyal Türü: Journal article
Dil:English
Baskı/Yayın Bilgisi: American Physical Society 2005
Konular:
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author Baker, P
Lancaster, T
Blundell, S
Brooks, M
Hayes, W
Prabhakaran, D
Pratt, F
author_facet Baker, P
Lancaster, T
Blundell, S
Brooks, M
Hayes, W
Prabhakaran, D
Pratt, F
author_sort Baker, P
collection OXFORD
description We report muon-spin rotation, heat capacity, magnetization, and ac magnetic susceptibility measurements of the magnetic properties of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long-range magnetic order below TN=19.5 K. Rapid muon depolarization, persisting from TN to about 5 K above TN, is consistent with the presence of short-range magnetic order. The temperature and frequency dependence of the ac susceptibility suggests that magnetic clusters persist above 25 K and that their volume fraction decreases with increasing temperature. A frequency dependent peak in the ac magnetic susceptibility at Tsf=3 K is observed, consistent with a slowing of spin fluctuations at this temperature. A partial magnetic phase diagram is deduced.
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spelling oxford-uuid:ab47fc30-d3d4-48ee-8d7e-a541a26e65de2022-03-27T03:21:00ZThermodynamic and magnetic properties of the layered triangular magnet NaNiO2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ab47fc30-d3d4-48ee-8d7e-a541a26e65dePhysicsCondensed Matter PhysicsEnglishOxford University Research Archive - ValetAmerican Physical Society2005Baker, PLancaster, TBlundell, SBrooks, MHayes, WPrabhakaran, DPratt, FWe report muon-spin rotation, heat capacity, magnetization, and ac magnetic susceptibility measurements of the magnetic properties of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long-range magnetic order below TN=19.5 K. Rapid muon depolarization, persisting from TN to about 5 K above TN, is consistent with the presence of short-range magnetic order. The temperature and frequency dependence of the ac susceptibility suggests that magnetic clusters persist above 25 K and that their volume fraction decreases with increasing temperature. A frequency dependent peak in the ac magnetic susceptibility at Tsf=3 K is observed, consistent with a slowing of spin fluctuations at this temperature. A partial magnetic phase diagram is deduced.
spellingShingle Physics
Condensed Matter Physics
Baker, P
Lancaster, T
Blundell, S
Brooks, M
Hayes, W
Prabhakaran, D
Pratt, F
Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title_full Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title_fullStr Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title_full_unstemmed Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title_short Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
title_sort thermodynamic and magnetic properties of the layered triangular magnet nanio2
topic Physics
Condensed Matter Physics
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AT lancastert thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2
AT blundells thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2
AT brooksm thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2
AT hayesw thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2
AT prabhakarand thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2
AT prattf thermodynamicandmagneticpropertiesofthelayeredtriangularmagnetnanio2