Control of chirality of transition-metal monosilicides by the Czochralski method

V. A. Dyadkin, S. V. Grigoriev, D. Menzel, D. Chernyshov, V. Dmitriev, J. Schoenes, S. V. Maleyev, E. V. Moskvin, H. Eckerlebe

Research output

24 Citations (Scopus)

Abstract

The crystallographic and magnetic chirality of the B20 (space group P213) solid solutions Fe1−xCoxSi and pure MnSi grown by the Czochralski method has been studied by means of the single crystal x-ray diffraction and the small-angle diffraction of polarized neutrons. To test the possibilities to control the crystal handedness, first, we have grown a series of MnSi crystals and one series of Fe1−xCoxSi samples with x=0,0.10,0.15,0.20,0.25,0.30,0.50 using a right-handed crystal as a seed. Second, we have grown another series of MnSi and Fe1−xCoxSi samples again of different concentrations using a left-handed crystal as a seed. In 90% of the cases the grown sample has been found to be enantiopure and to inherit the crystallographic chirality of its seed crystal. In 10% of the cases undefined circumstances flip the chirality over for the next progeny or produce a racemic sample. The magnetic chirality of these compounds has been shown to be rigorously related to their crystallographic handedness, but in the oppos
Original languageEnglish
Pages (from-to)014435_1-5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number1
DOIs
Publication statusPublished - 2011
Externally publishedYes

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