Valsala Kumari, C K; Dr.Joy, George(Cochin University of Science and Technology, September 20, 1984)
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Abstract:
During the past few decades, a wide spread interest in the structural, optical, electrical and
other physical properties of the transition metal dichalcogenide layer compounds has evolved. The members of this family of compounds can be regarded as strongly bonded two dimensional chalcogen-metal~chalcogen layers which are loosely coupled to one another by the weak ven
der Waal's forces. Because of this type of bonding, the crystals are easily cleavable along the basal plane and show highly anisotropic properties. This thesis contains the growth and the study
of the physical properties of certain tin dichalcogenide crystals (SnS2 and SnSe2). Tin disulphide and tin diselenide crystallize in the hexagonal CdI2 type crystal structure. This structure consists of layers of tin atoms sandwiched between two layers of chalcogen atoms. A tin atom is surrounded by six chalcogen atoms octahedrally.In the layers the atoms are held together by
covalent bonding and in between the layers there is van der Waal's bonding.
Description:
Department of Physics, Cochin University of Science and Technology