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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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TL;DR: In this paper, the properties of NiMnGe1−nSin (0 ≦ n ≦ 1) were studied in the temperature range from 80 to 1000 K by X-ray and neutron diffraction, magnetometric and DTA measurements.
Abstract: Magnetic and crystallographic nature of the compounds NiMnGe1−nSin (0 ≦ n ≦ 1) are studied in the temperature range from 80 to 1000 K by X-ray and neutron diffraction, magnetometric and DTA measurements. On the basis of these experimental data, crystallographic and magnetic phase diagram are constructed. The compounds have NiTiSi type structure at low temperatures and they transform into the Ni2In type structure at high temperatures. Magnetic and neutron diffraction measurement revealed the existence of three regions of different types of magnetic orderings: helicoidal (0 ≦ n ≦ 0.25), noncollinear (0.3 ≦ n ≦ 0.55), and ferromagnetic (0.6 ≦ n ≦ 1.0). The transition from antiferromagnetic to ferromagnetic phase implies the decrease of the MnMn distances.
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68 citations
TL;DR: In this paper, the magnetic properties and specific heat of NdFeO3 single crystal were systematically studied in the temperature range from 2 to 300 K, with the gradual transition of the Fe3+ magnetic moment ordering from low temperatures to high temperatures.
Abstract: High quality NdFeO3 single crystal has been grown by the four-mirror image floating zone technique. The magnetic properties and specific heat of NdFeO3 single crystal were systematically studied in the temperature range from 2 to 300 K. A clear spin reorientation behavior is observed in a wide temperature range from 100 to 170 K, with the gradual transition of the Fe3+ magnetic moment ordering from {Gz, Mx}-type ordering at low temperatures to {Gx, Mz}-type ordering at high temperatures. In the temperature range from 170 to 300 K, the value of Mx is not equal to zero. It is assumed a single {Gx, Mz}-type ordering mixed with {Gxz, Mxz}-type orderings. During the spin orientation transition process, the hysteresis loops become narrow with very small coercivity. Based on the specific heat measurement, the Schottky anomaly at very low temperature and the thermal anomalies induced by the spin reorientation were also discussed.
68 citations
TL;DR: Total neutron scattering data from a powdered sample of MnO collected at 10 K have been analyzed using the reverse Monte Carlo method to refine the nuclear and magnetic structure and give the first unambiguous assignment of the average magnetic structure.
Abstract: Total neutron scattering data from a powdered sample of MnO collected at 10 K have been analyzed using the reverse Monte Carlo method to refine the nuclear and magnetic structure. The results give the first unambiguous assignment of the average magnetic structure. The magnetic moments are aligned ferromagnetically within (111) sheets with the magnetization vectors of alternate sheets along axes parallel and antiparallel to the directions, albeit with a small modulated out-of-plane component. Small displacements of Mn and O (modulated with the same periodicity) accompany the magnetic ordering and both atomic and magnetic structures may be described in the monoclinic space group C2.
68 citations
TL;DR: In this paper, the phase boundary between mixed crystals with MnP-structure and those with NiAsstructure was investigated by neutron diffraction at various temperatures, and the signs and the ratios of the exchange integrals were discussed in a Heisenberg model.
68 citations
TL;DR: In this article, the magnetic properties of orthorhombic LiMnO 2 have been investigated in detail for the first time, and the magnetic structure has been solved from neutron diffraction data and has a propagation vector of k =(1/2 1/2 2 1 2 ) and an ordered magnetic moment of 3.69(4) μ B /Mn 3+ with a preferred direction parallel to the b axis.
68 citations