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Magnetic structure
About: Magnetic structure is a research topic. Over the lifetime, 10787 publications have been published within this topic receiving 207143 citations.
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South Ural State University1, National University of Science and Technology2, University of Dammam3, Joint Institute for Nuclear Research4, Immanuel Kant Baltic Federal University5, Tanta University6, National Research University of Electronic Technology7, Ural Federal University8, L.N.Gumilyov Eurasian National University9
TL;DR: In this article, the peculiarities of the fine atomic and magnetic structure, magnetic properties and microwave characteristics under Sc-substitution were investigated in Ba(Fe1-xScx)12O19 (x ≤ 0.1) solid solutions.
93 citations
TL;DR: This work explores magnetic behavior and ensuing functional properties of Fe(2.9)GeTe2 via neutron diffraction, thermodynamic and transport measurements, Mössbauer spectroscopy, and electronic structure calculations, which reveal a remarkably high easy-axis anisotropy of 4.2 meV/f.
Abstract: The ternary transition-metal compound Fe3−δGeTe2 is formed for 0 < δ < 0.3. X-ray diffraction and Mossbauer spectroscopy reveal its layered crystal structure with occasional Fe vacancies in the Fe2 site, whereas no Fe atoms occupy the interlayer space, so that only van der Waals interactions exist between adjacent layers. We explore magnetic behavior and ensuing functional properties of Fe2.9GeTe2 via neutron diffraction, thermodynamic and transport measurements, Mossbauer spectroscopy, and electronic structure calculations. Below TC = 225 K, Fe2.9GeTe2 is ferromagnetically ordered with the magnetic moments of 1.95(5) and 1.56(4) μB at T = 1.5 K, both directed along c, which is the magnetic easy axis. Electronic structure calculations confirm this magnetic structure and reveal a remarkably high easy-axis anisotropy of 4.2 meV/f.u. Mossbauer spectra reveal the magnetic ordering too, although a drastic influence of Fe vacancies on quadrupolar splittings and local magnetic fields has been observed. A moderat...
93 citations
TL;DR: A field-induced insulator-metal (I-M) transition in Pr 0.7 Ca 0.3 MnO 3 has been studied with neutron diffraction experiments and it has been established that an applied field enforces a ferromagnetic spin alignment and drives Pr 1.0 T to a metallic state by actuating the double exchange mechanism and destroying the charge ordering.
Abstract: A field-induced insulator-metal (I-M) transition in Pr 0.7 Ca 0.3 MnO 3 has been studied with neutron diffraction experiments. Over the whole temperature range, the resistivity of Pr 0.7 Ca 0.3 MnO 3 shows insulating behavior at zero field, but exhibits an I-M transition at around 4.0 T at 5 K. It has been established that an applied field enforces a ferromagnetic spin alignment and drives Pr 0.7 Ca 0.3 MnO 3 to a metallic state by actuating the double exchange mechanism and destroying the charge ordering. This I-M transition at 5 K is accompanied with a large hysteresis. By contrast, in the field dependence at 50 K, antiferromagnetic and charge-order components are gradually recovered below 2.0 T in a field-decreasing process. Furthermore, a reentrant I-M-I transition has been observed in the temperature dependence at 2.5 T.
93 citations
TL;DR: In this paper, the electronic and magnetic structure of fcc (γ-)Fe is determined using the local spin-density functional approximation and the ASW method to solve the band-structure problem self-consistently.
93 citations
TL;DR: In this article, the gallium-doped pure barium hexaferrite (BaFe12-xGaxΟ19) with different concentration was investigated by using NPD carried out at various temperatures for studying the magnetic structures according to the crystal structure.
93 citations