Determining the magnetic ground state of TbNi 5 single crystal using polarized neutron scattering technique / Pirogov A.N., Bogdanov S.G., Lee S., Park J.-G., Choi Y.-N., Lee H., Grigorev S.V., Sikolenko V.V., Sherstobitova E.A., Schedler R. // Journal of Magnetism and Magnetic Materials. - 2012. - V. 324, l. 22. - P. 3811-3816.

ISSN:
03048853
Type:
Article
Abstract:
The TbNi 5 compound shows an interesting magnetic phase transition with an incommensurate structure below 23 K, whose true nature remains unresolved. In order to solve this question, we have carried out polarized neutron diffraction experiments by measuring temperature and field dependence of the intensities of satellites and Bragg reflections. From the temperature dependence of both satellite peaks and Bragg reflection, we demonstrated that it has only one magnetic structure at a given temperature. Furthermore, unlike previous reports, we found that both ferromagnetic and modulated components of the Tb ion magnetic moments should be collinear to each other. Our data also show strong depolarisation effects that are most likely to arise from domain structure of ferromagnetic component. A critical field, which destroyers a modulated magnetic structure is found to be lower than a field value to saturate the ferromagnetic component, in which the intensity of Bragg ferromagnetic reflections reaches saturation. © 2012 Elsevier B.V.
Author keywords:
Incommensurate magnetic structure; Magnetic phase transition
Index keywords:
Bragg reflection; Critical fields; Domain structure; Ferromagnetic component; Field dependence; Field values; Incommensurate magnetic structures; Incommensurate structure; Magnetic ground state; Magne
DOI:
10.1016/j.jmmm.2012.06.019
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Affiliations Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg 620990, Russian Federation; Neutron Science Division HANARO, Korea Atomic Energy Research Institute, Daejeon 305-600, South Korea; FPRD, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, South Korea; Petersburg Institute Nuclear Physics, Gatchina 188300, Russian Federation; Joint Institute for Nuclear Research, Dubna 141980, Russian Federation; Karlsruhe Institute of Technology, Kurlsruhe D-76131, Germany; Helmholtz Centre Berlin for Materials and Energy, Berlin D-14109, Germany
Author Keywords Incommensurate magnetic structure; Magnetic phase transition
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Correspondence Address Pirogov, A.N.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg 620990, Russian Federation; email: pirogov05@gmail.com
CODEN JMMMD
Language of Original Document English
Abbreviated Source Title J Magn Magn Mater
Source Scopus