Commensurate-incommensurate magnetic phase transition induced in TbNi5 by an external magnetic field / Bogdanov S.G., Gerasimov E.G., Skryabin Yu.N., Sherstobitova E.A., Sikolenko V.V., Schedler R., Pirogov A.N. // Physics of Metals and Metallography. - 2012. - V. 113, l. 3. - P. 228-232.

ISSN:
0031918X
Type:
Article
Abstract:
Neutron-diffraction studies of a single crystal of TbNi 5 have been performed. Temperature and field dependences of the intensities of the Bragg reflection (001) and magnetic satellites (001) - and (001) + have been determined. In the temperature range of 7-10 K, sharp changes in the intensities of both the Bragg reflection and its satellites have been revealed. A conclusion is made that these changes are due to the existence of a magnetic transition from an incommensurate into a lock-in structure. It has been found that at 11 K an external magnetic field μ 0H = 0.1 T oriented along the [100] axis induces the same magnetic state of the crystal as its cooling to 7 K in the absence of a field. In an external magnetic field μ 0H = 0.4 T, there occurs a magnetic transition from the incommensurate phase with a wave vector k = 2π/c (0, 0, 0.18) into a commensurate ferromagnetic phase with k = 0. In the ferromagnetic phase, an increase in the field from 0.4 to 0.6 T is accompanied by an increase in the intensity of the ferromagnetic reflection (001) by a factor of 1.6. This indicates the existence of strong fluctuations of the magnetization at 0.4 T. © Pleiades Publishing, Ltd., 2012.
Author keywords:
Commensurate and incommensurate magnetic structures; Neutron diffraction; Phase transition
Index keywords:
Bragg reflection; External magnetic field; Ferromagnetic phase; Field dependence; Incommensurate magnetic structures; Incommensurate phase; Lock-in; Magnetic phase transitions; Magnetic state; Magneti
DOI:
10.1134/S0031918X12030052
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Affiliations Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, 620990, Russian Federation; Helmholtz-Zentrum Berlin für Materialen und Energie (HZB), BENSZ, Glienicker Straše 100, 14109 Berlin, Postfach 390128, Germany
Author Keywords Commensurate and incommensurate magnetic structures; Neutron diffraction; Phase transition
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Correspondence Address Bogdanov, S.G.; Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, 620990, Russian Federation
Language of Original Document English
Abbreviated Source Title Phys. Met. Metallogr.
Source Scopus