Thermobaric treatment induced changes in the structure and magnetic properties of manganese antimonide

Goncharov, V. S.; Рыжковский, В. М.

doi:10.1134/1.1388938

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…According to the literature date [27,31], thermobaric treatment at temperatures up to 1200 K does not lead to a change in the space group of crystalline substances. However, structural deformation can occur, which can have a significant effect on material properties, such as magnetic or electrical.…”

Section: Thermobaric Treatment (Tbt) Of the Precursormentioning

confidence: 99%

The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate

Deeva¹,

Mirzorakhimov²,

Suntsov³

et al. 2022

Chim.Tech.Acta

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The influence of thermal and thermobaric (TBT) effects on the structure, microstructure, and dielectric properties of ceramics based on solid solutions of the La1.8Ca0.2Ni0.8M0.2O4+δ (M = Co, Cu) composition was studied. TBT treatment of the samples leads to a change in the grain morphology of ceramics and an increase in the dielectric constant compared to its value only after heat treatment. The change in the anisotropy of the coordination (La,Ca)O9 and (Ni,M)O6 polyhedra after TBT contributed to interlayer polarization in the crystal structure of La1.8Ca0.2Ni0.8M0.2O4+δ.

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Section: Thermobaric Treatment (Tbt) Of the Precursormentioning

confidence: 99%

The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate

Deeva¹,

Mirzorakhimov²,

Suntsov³

et al. 2022

Chim.Tech.Acta

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“…These features are particularly appealing in the context of supergravity and superstring theories, where the natural scale for fields is the Planck scale. In the context of N = 1 Supergravity, however, realizations of chaotic inflation in minimal and in SU (1, 1) theories are somewhat special as to ensure sufficient inflation [2,3]. Furthermore, chaotic inflation requires super-Planckian field values both to ensure sufficient inflation and the correct amount of Cosmic Microwave Background (CMB) anisotropies, in which case higher order non-renormalizable terms in the superpotential would completely dominate the dynamics since no well motivated symmetry is known to prevent them.…”

Section: Introductionmentioning

confidence: 99%

N=1supergravity chaotic inflation in the braneworld scenario

Bento

Bertolami

2002

Phys. Rev. D

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We study a N=1 Supergravity chaotic inflationary model, in the context of the braneworld scenario. It is shown that successful inflation and reheating consistent with phenomenological constraints can be achieved via the new terms in the Friedmann equation arising from brane physics. Interestingly, the model satisfies observational bounds with sub-Planckian field values, implying that chaotic inflation on the brane is free from the well known difficulties associated with the presence of higher order non-renormalizable terms in the superpotential. A bound on the mass scale of the fifth dimension, M5 ∼ > 1.3 × 10 −6 MP , is obtained from the requirement that the reheating temperature be higher than the temperature of the electroweak phase transition.

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“…4 Although phase separation is expected to have detrimental effects on the functional properties of spintronic devices, in the case of InMnSb some of the expected secondary phases, such as MnSb and Mn 2 Sb, are still ferromagnetic with T C well above room temperature. 5,6 In a previous work 7 we have shown that In 1Àx Mn x Sb alloy films maintain their ferromagnetism well above room temperature without phase separation when x 0.035. In this study we investigate the magnetic and structural properties of metalorganic vapor phase epitaxy (MOVPE) In 1Àx Mn x Sb films with a much higher Mn concentration, nominally up to x ¼ 0.22.…”

mentioning

confidence: 96%

Ferromagnetic InMnSb multi-phase films study by aberration-corrected (scanning) transmission electron microscopy

Lari

Lea

Feeser

et al. 2012

Journal of Applied Physics

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In this work we report a structural and compositional study of ferromagnetic In0.78Mn0.22Sb films correlated to the magnetic properties as determined by superconducting quantum interference device magnetometer. The epilayers grown by metalorganic vapor phase epitaxy on GaAs(001) substrates showed two active magnetic components with Curie temperatures of approximately 300 K and in excess of 570 K. Secondary phases driven by the high manganese concentration (10 at. %) were identified by high-resolution (scanning) transmission electron microscopy imaging and energy dispersive X-ray spectroscopy. Most of the Mn was found to be incorporated in metallic manganese nanoprecipitates surrounded by an InMnSb matrix with Mn at 1 at. % concentration. The origin of the two Curie temperatures of the film is associated with the presence of three magnetic components: hexagonal MnSb nanoprecipitates, non-stoichiometric MnAsSb, and the InMnSb matrix.

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Thermobaric treatment induced changes in the structure and magnetic properties of manganese antimonide

Cited by 4 publications

References 3 publications

The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate

The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate

N=1supergravity chaotic inflation in the braneworld scenario

Ferromagnetic InMnSb multi-phase films study by aberration-corrected (scanning) transmission electron microscopy

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