Abstract
We present a route to grow single crystals of Ba 0.9 Sr 0.1 CuSi 2 O 6 suitable for inelastic neutron studies via the floating zone technique. Neutron single crystal diffraction was utilized to check their bulk quality and orientation. Finally, the high quality of the grown crystals was proven by X-ray diffraction and magnetic susceptibility.
Highlights
Already in the Han Dynasty, the historically known compound Han Purple [1] BaCuSi2 O6 was used as a purple coloring pigment in China
This interest was investigated after the discovery of an incommensurately modulated low temperature structure below 100 K [7,8,9] complicating the model and its physics
These studies were performed on BaCuSi2 O6 crystals grown by two methods, namely, the floating zone (FZ) method in an oxygen flow [5,10] and from an oxygen spending lithiummetaborate flux [6,11], both with no detailed description of the growth conditions
Summary
Already in the Han Dynasty, the historically known compound Han Purple [1] BaCuSi2 O6 was used as a purple coloring pigment in China. As the triplet state Zeeman split, in high magnetic fields, a two-dimensional Bose–Einstein condensate (BEC) of the bosonic triplet quasiparticles created a strong interest [5,6] in the compound. This interest was investigated after the discovery of an incommensurately modulated low temperature structure below 100 K [7,8,9] complicating the model and its physics. Direction [10]. (b) Same arrangement of the low temperature Ibam structure of Han Purple [8]
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