Cubic, hexagonal and tetragonal FeGex phases (x = 1, 1.5, 2): Raman spectroscopy and magnetic properties

Kúkoĺová, Anna; Dimitrievska, Mirjana; Litvinchuk, A. P.; Ramanandan, Santhanu Panikar; Tappy, Nicolas; Menon, Heera; Borg, Bertil; Grundler, D.; Morral, Anna Fontcuberta i

doi:10.1039/d1ce00970b

CrystEngComm

2021

DOI: 10.1039/d1ce00970b

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Cubic, hexagonal and tetragonal FeGe_x phases (x = 1, 1.5, 2): Raman spectroscopy and magnetic properties

Anna Kúkoĺová

Mirjana Dimitrievska

A. P. Litvinchuk

et al.

Abstract: Structural properties of various FeGex compounds are explored by Raman spectroscopy in order to provide reference Raman spectra, and enable fast and local phase determination in FeGe thin films.

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References 46 publications

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Electronic and dynamical properties of cobalt monogermanide CoGe phases under pressure

Basak,

Kobiałka,

Sternik

et al. 2024

Computational Materials Science

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Electronic and dynamical properties of cobalt monogermanide CoGe phases under pressure

Basak,

Kobiałka,

Sternik

et al. 2024

Computational Materials Science

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Magnetic and magnetoelastic properties of antiferromagnet FeGe2

Grechnev,

Lyogenkaya,

Desnenko

et al. 2023

Low Temperature Physics

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The magnetic susceptibility χ of single-crystal antiferromagnet FeGe2 (TN = 289 K) was measured in the temperature range from 4.2 to 300 K in a magnetic field H up to 40 kOe applied along the main crystallographic axes. For the antiferromagnetic (AFM) state at low temperatures, a strong increase in χ is observed with increasing H applied along the [100] axis, which reaches saturation at H≥H0∼ 11 kOe. It is assumed that this behavior is associated with a field-induced change in the AFM domain structure, and the single-domain state is realized in a field above H0 with the AFM axis perpendicular to the field direction. The study of χ under the uniaxial Pa and uniform P pressures in a wide temperature range has revealed an anomalously large increase in χ in AFM state with increasing uniaxial pressure for Pa||H||[100] at H≪H0. The observed growth of χ saturates at pressure Pa≥Pa∗≃1.5 kbar and suggests the formation of the single-domain state for the above conditions. The values of uniform pressure effect on χ was found to lie in the range dln⁡χ/dP = − (2–3) Mbar–1, being weakly dependent on the magnetic state and field direction. In addition, the uniform pressure effect on the transition temperature between two AFM structures in FeGe2, TM≃263 K, was found to be weak.

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Cubic, hexagonal and tetragonal FeGe_x phases (x = 1, 1.5, 2): Raman spectroscopy and magnetic properties

Abstract: Structural properties of various FeGex compounds are explored by Raman spectroscopy in order to provide reference Raman spectra, and enable fast and local phase determination in FeGe thin films.

Cited by 2 publications

References 46 publications

Electronic and dynamical properties of cobalt monogermanide CoGe phases under pressure

Electronic and dynamical properties of cobalt monogermanide CoGe phases under pressure

Magnetic and magnetoelastic properties of antiferromagnet FeGe2

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