Synthesis of New Ga7Ge3Te11—One-dimensional Phase in Ga–Ge–Te Ternary System: Crystal Structure and Physical Properties

Cestmir Drasar,Ivana CisarovaTop Scholar,Vladimir Kucek,Ludvik Benes,Jan Prokleska,Marie Kratochvilova

Journal of Solid State Chemistry（2015）SCI 3区SCI 4区

Cited 2|Views21

Abstract

Ga7Ge3Te11 single crystals were grown using transport in a temperature gradient. The prepared single crystals have a needle-like appearance, 1 to 40μm in diameter and 2 to 20mm in length. The Ga7Ge3Te11 single crystals were characterized by both single crystalline and powder X-ray diffraction. The structure consists of one-dimensional molecular strings bonded together through tellurium atoms by a weak bond of the van der Waals type. A large unit cell volume indicates the complexity of the structure. The room temperature theoretical density is 5.73gcm−3. The compound shows semiconducting properties and possesses peculiar magnetic properties.

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Key words

Crystal structure,Single crystal growth,Semiconducting gallium compounds

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