ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/3954

Title: NdRhSn: A ferromagnet with an antiferromagnetic precursor
Authors: Mihalik, M
Prokleška, J
Kamarád, J
Prokescaron, K
Isnard, O
McIntyre, GJ
Dönni, A
Yoshii, S
Kitazawa, H
Sechovský, V
de Boer, FR
Keywords: MAGNETIC PROPERTIES
CRYSTALS
SUPERCONDUCTIVITY
PRECURSOR
FERROMAGNETISM
MAGNETIC MOMENTS
Issue Date: 9-Mar-2011
Publisher: American Physical Society
Citation: Mihalik, M., Prokleska, J., Kamarad, J., Prokes, K., Isnard, O., McIntyre, G.J., Donni, A., Yoshii, S., Kitazawa, H., Sechovsky, V., de Boer, F.R. (2011). NdRhSn: A ferromagnet with an antiferromagnetic precursor. Physical Review B, 83(10), Art. No.104403.
Abstract: NdRhSn has a ferromagnetic ground state [T(t) = 7.6(1) K] with a magnetic moment equal to 2/3 of the free Nd(3+)-ion moment. Upon cooling from the paramagnetic state, the ferromagnetism is preceded by an incommensurate antiferromagnetic state between T(N) = 9.8(1) K and T(t). In both magnetic phases the magnetic moments are locked along the c axis, which is the easy-magnetization axis of the system. We have investigated this unusual situation by measuring anomalies of several bulk physical properties characteristic for the magnetic phase transitions at T(N) and T(t) and the response of these properties to an applied magnetic field. Neutron-diffraction experiments have been also performed at low temperatures. Furthermore, in order to understand better the physical properties of NdRhSn, single crystals have been studied under external hydrostatic and uniaxial pressure and in high magnetic fields. An antiferromagnetic phase with a propagation vector (0 0 1/11) has been found between T(N) and T(t). The magnetic-ordering temperatures T(N) and T(t) are sensitive to both hydrostatic and uniaxial pressures, but in a different manner. Application of hydrostatic pressure leads to a reduction of the ordering temperatures at rates Delta T(N)/Delta p = -0.76(5) K/GPa and Delta T(t)/Delta p = -0.9(2) K/GPa while uniaxial pressure applied along the c axis leads to an increase of the ordering temperatures at rates Delta T(N)/Delta p = +1.2(5) K/GPa and Delta T(t)/Delta p = +2.7(4) K/GPa. No considerable influence of pressure on the antiferromagnetic propagation vector has been found. The peculiar evolution of magnetism in NdRhSn with temperature indicates a complex hierarchy of exchange interactions. © 2011, American Physical Society
URI: http://dx.doi.org/10.1103/PhysRevB.83.104403
http://apo.ansto.gov.au/dspace/handle/10238/3954
ISSN: 1098-0121
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback