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Modulated magnetic structure in quasi-one-dimensional clinopyroxene NaFeGe2O6 / T. V. Drokina [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 112, Is. 1. - P. 121-126, DOI 10.1134/S1063776110061093. - Cited References: 18 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
Antiferromagnetics -- Clinopyroxenes -- Field dependence -- Helical modulation -- Incommensurate magnetic structures -- Magnetic phase transitions -- Monoclinic compound -- Order-disorder -- Orientation phase transitions -- Quasi-one-dimensional -- Temperature behavior -- Temperature dependence -- Wave vector -- Antiferromagnetism -- Magnetic devices -- Magnetic structure -- Phase transitions -- Crystallography
Аннотация: The magnetic structure of the NaFeGe2O6 monoclinic compound has been experimentally investigated using the elastic scattering of neutrons. At a temperature of 1.6 K, an incommensurate magnetic structure has been observed in the form of an antiferromagnetic helix formed by a pairs of the spins of the Fe3+ ions with helical modulation in the ac plane of the crystal lattice. The wave vector of the magnetic structure has been determined and its temperature behavior has been studied. The analysis of the temperature dependences of the specific heat and susceptibility, as well as the isotherms of the field dependence of the magnetization, has revealed the existence of not only the order-disorder magnetic phase transition at the point T (N) = 13 K, but also an additional magnetic phase transition at the point T (c) = 11.5 K, which is assumingly an orientation phase transition.

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Держатели документа:
[Drokina, T. V.
Petrakovskii, G. A.
Balaev, A. D.
Kartashev, A. V.
Ivanov, D. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Drokina, T. V.
Petrakovskii, G. A.] Siberian Fed Univ, Krasnoyarsk 660074, Russia
[Keller, L.
Schefer, J.] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Keller, L.
Schefer, J.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660074, Russian Federation
Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institut, Villigen PSI CH-5232, Switzerland

Доп.точки доступа:
Drokina, T. V.; Дрокина, Тамара Васильевна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Keller, L.; Schefer, J.; Balaev, A. D.; Балаев, Александр Дмитриевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Ivanov, D. A.
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