Single crystal growths
Single crystal growths
The Crystal Growth Laboratory is a support facility within the School of Physical Sciences (SPS) at the Indian Association for the Cultivation of Science located in Kolkata, India.
From a synthesis perspective, our laboratory is dedicated to the growth of large single crystals for our research projects. A single crystal is defined as a regular array of atoms that is repeated with the same orientation and without interruption throughout the sample. Much of the progress in solid-state physics, which has led to the development of the transistor, the integrated circuit, and a number of lasers, can be attributed to the availability of single crystals for both research and the manufacturing of marketable devices.
We have grown a wide variety of single crystals mainly Van der Walls (vdW) low dimensional chalcogenides and a few 2D magnets using the chemical vapor transport (CVT) method. The crystals grown are usually produced in a series with varying concentrations of rare earth and/or transition metal ion dopants. While most of the crystals grown here are used in-house, we will be happy to provide readymade crystals to researchers at government and university laboratories.
Furnaces for crystal growths:
(A) Two-zone furnace - 1: Maximum continuous working temperature 1000°C
(B) Two-zone furnace - 2: Maximum continuous working temperature 1300°C
(C) Box furnace - 1: Maximum continuous working temperature - 1100°C
Single crystal growth using CVT method
Figure 1. (a) Growth process of samples using Chemical Vapour Transport Method (CVT).(b) The picture of a recently procured two-zone furnace for the CVT growth. (c) Picture of single crystals of quasi-1D compounds including (TaSe4)2I, (TaSe4)3I, (NbSe4)2I, and Ta2PdS5 grown using the CVT method in our lab.
Layered Van der Walls Crystals
VBS
2D Magnets
FGT1
FGT2
FGT3
Quasi 1D Systems
Ta2PdS5
TS
(TaSe4)2I
TNS
N-TSI
Superconductor
BI
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