Thermal expansion of monogermanides of 3d-metals

Valkovskiy, G. A.; Altynbaev, E. V.; Kuchugura, M. D.; Yashina, E. G.; Sukhanov, A. S.; Dyadkin, Vadim; Tsvyashchenko, A. V.; Sidorov, V. A.; Фомичева, Л.Н.; Bykova, Elena; Ovsyannikov, Sergey V.; Chernyshov, Dmitry; Grigoriev, S. V.

doi:10.1088/0953-8984/28/37/375401

Cited by 9 publications

(12 citation statements)

References 56 publications

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“…4). Similar practically linear a(x) curve has been already observed for Mn 1−x Co x Ge in papers [14,20]. The linear dependence a(x) has been also reported for other solid solutions of B20-type 3d-metal monogermanides: Mn 1−x Fe x Ge [11,21] and Fe 1−x Co x Ge [22].…”

Section: B Vegard's and Non-vegard's Behaviorsupporting

confidence: 84%

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge

Chtchelkatchev

Magnitskaya

Sidorov

et al. 2019

Pure and Applied Chemistry

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The search and exploration of new materials not found in nature is one of modern trends in pure and applied chemistry. In the present work, we report on experimental and ab initio densityfunctional study of the high-pressure-synthesized series of compounds Mn1−x(Co,Rh)xGe. These high-pressure phases remain metastable at normal conditions, therewith they preserve their inherent noncentrosymmetric B20-type structure and chiral magnetism. Of particular interest in these two isovalent systems is the comparative analysis of the effect of 3d (Co) and 4d (Rh) substitution for Mn, since the 3d orbitals are characterized by higher localization and electron interaction than the 4d orbitals. The behavior of Mn1−x(Co,Rh)xGe systems is traced as the concentration changes in the range 0 ≤ x ≤ 1. We applied a sensitive experimental and theoretical technique which allowed to refine the shape of the temperature dependencies of magnetic susceptibility χ(T ) and thereby provide a new and detailed magnetic phase diagram of Mn1−xCoxGe. It is shown that both systems exhibit a helical magnetic ordering that very strongly depends on the composition x. However, the phase diagram of Mn1−xCoxGe differs from that of Mn1−xRhxGe in that it is characterized by coexistence of two helices in particular regions of concentrations and temperatures.

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Section: B Vegard's and Non-vegard's Behaviorsupporting

confidence: 84%

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge

Chtchelkatchev

Magnitskaya

Sidorov

et al. 2019

Pure and Applied Chemistry

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“…Inserting these displacements into Eqs. (2,3) and minimizing the total energy with respect to u zz , u xz , and u yz , we find the remaining components of the deformation tensor…”

Section: Magnetoelastic Effectmentioning

confidence: 99%

Theory of magnetoelastic resonance in a monoaxial chiral helimagnet

et al. 2018

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We study magnetoelastic resonance phenomena in a mono-axial chiral helimagnet belonging to hexagonal crystal class. By computing the spectrum of coupled elastic wave and spin wave, it is demonstrated how hybridization occurs depending on their chirality. Specific features of the magnetoelastic resonance are discussed for the conical phase and the soliton lattice phase stabilized in the mono-axial chiral helimagnet. The former phase exhibits appreciable non-reciprocity of the spectrum, the latter is characterized by a multi-resonance behavior. We propose that the nonreciprocal spin wave around the forced-ferromagnetic state has potential capability to convert the linearly polarized elastic wave to circularly polarized one with the chirality opposite to the spin wave chirality.

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“…MnSi, FeCoSi, and FeGe [7]. Although they are in the same symmetry group, these silicides and germanides have surprising and distinctive electronic and magnetic properties depending on pressure, temperature, electric and magnetic fields [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Chiral magnetic excitations in FeGe films

et al. 2017

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Abstract:Although chiral magnetic materials have emerged as a potential ingredient in future spintronic memory devices, there are few comprehensive studies of magnetic properties in scalably-grown thin films. We present growth, systematic physical and magnetic characterization, and microwave absorption spectroscopy of B20 FeGe thin films. We also perform micromagnetic simulations and analytical theory to understand the dynamical magnetic behavior of this material. We find magnetic resonance features in both the helical and fieldpolarized magnetic states that are well explained by micromagnetic simulations and analytical calculations. In particular, we show the resonant enhancement of spin waves along the FeGe film thickness that has a wave vector matching the helical vector. Using our analytic model, we also describe the resonance frequency of a helical magnetic state, which depends solely on its untwisting field. Our results pave the way for understanding and manipulating high frequency spin waves in thin-film chiral-magnet FeGe near room temperature.

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Thermal expansion of monogermanides of 3d-metals

Cited by 9 publications

References 56 publications

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge

Theory of magnetoelastic resonance in a monoaxial chiral helimagnet

Chiral magnetic excitations in FeGe films

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Thermal expansion of monogermanides of 3d-metals

Cited by 9 publications

References 56 publications

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn1− x (Co,Rh) x Ge

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn1− x (Co,Rh) x Ge

Theory of magnetoelastic resonance in a monoaxial chiral helimagnet

Chiral magnetic excitations in FeGe films

Contact Info

Product

Resources

About

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge

Theoretical and experimental study of high-pressure synthesized B20-type compounds Mn₁₋ _x (Co,Rh) _x Ge