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BARC


Mandate

Solid State Physics Division carries out frontier research on various aspects of Condensed Matter Physics.
✔ Advanced Magnetic Materials
✔ Structure and Dynamics of Functional Materials
✔ Soft Matter Structure and Interaction Studies
✔ Nano Structures and Interaction Studies
The Division is responsible for the building, maintenance, operation and utilization of the National Facility for Neutron Beam Research (NFNBR) at Dhruva reactor.
In addition, the Division is also responsible for development of neutron detectors such as BF3 Proportional Counters, 3He based 1-D Position Sensitive Detectors and 2-D Area Detectors.


Highlights


9/2020

From various experiments on highly irradiated graphite samples from CIRUS reactor at Trombay and ab-initio simulations, we have for the first time identified various 2-, 3- and 4-coordinated topological structures in defected graphite, and provided microscopic mechanism of defect annihilation on heating and release of the Wigner energy. The annihilation process involves cascading cooperative movement of atoms in two steps involving an intermediate structure



9/2020

From various experiments on highly irradiated graphite samples from CIRUS reactor at Trombay and ab-initio simulations, we have for the first time identified various 2-, 3- and 4-coordinated topological structures in defected graphite, and provided microscopic mechanism of defect annihilation on heating and release of the Wigner energy. The annihilation process involves cascading cooperative movement of atoms in two steps involving an intermediate structure




Facilities

01-01-1990

Study of short and intermediate range order in glasses, liquids and disordered crystals.


01-01-1990

For the investigation of conduction properties of energy materials as a function of frequency, temperature, controlled gas environment, and magnetic field.


01-01-1990

For inelastic neutron scattering experiments from single crystals/ polycrystalline samples.


01-01-1990

Study of size/magnetization of magnetic domains or clusters at mesoscopic length scales.


01-01-1990

Based on four circle Eulerian geometry. Used for study of high precision 3D structure of materials.


01-01-1990

Study of magnetic ordering/phases in technologically important polycrystalline magnetic materials.


01-01-1990

Delineation of chemical and magnetic structure phase diagrams of poly-crystalline materials.


01-01-1990

For inelastic neutron scattering experiments from polycrystalline samples.


01-01-1990

Study of stochastic molecular motion in pico second time scales. It provides both time scale and geometry of motion.


01-01-1990

A medium resolution Small Angle Neutron Scattering (SANS) instrument used to study structural features in 20 nm to 1000 nm scale.


01-01-1990

Study of depth dependent magnetic properties of thin films and multilayers.


01-01-1990

SANS instrument is used to determine the structure and interactions at nanometre length scales.


01-01-1990

A multipurpose neutron beam line for varigated uses such as detector calibration, neutron radiography etc


01-01-1990

SSPD is developing two facilites at Apsara U Beam lines viz. (1) Single Crystal Alignment Facility and (2) Detector Test Facility


01-01-1990

Probe morphology of nanostructured materials in film as well as powder form along with elemental analysis of nanoparticles, alloys, porous materials, ceramics, polymers etc.


01-01-1990

Small and Wide Angle X-ray Scattering Beamline for study of structures at Mesoscopic length scale (1-100 nm), covering wide range of fields, including alloys, polymers, macromolecules, emulsions, porous materials, nanoparticles, soft-matter etc.


01-01-1990

12 Tesla Vibrating Sample Magnetometer (VSM) to study the magnetic properties of various technologically important materials.


01-01-1990

Raman spectroscopy of single crystals, polycrystals, 1D-2D materials, nanocrystals, glasses, liquids and for Surface Enhanced Raman Spectrometer


01-01-1990

Measures fluctuations in intensity auto correlations to determine the hydrodynamic size and diffusion of particles in a suspension.


01-01-1990

Instrument for studies of hyperfine interactions in Fe containing samples using Co-57 source (50 mCi)


01-01-1990

To measure the magneto-caloric properties of potential magnetic materials for magnetic refrigeration.


01-01-1990

9 Tesla Cryomagnet with following physical properties measurement options: Vibrating Sample Magnetometer (VSM), AC Susceptibility, Resistivity and Hall Effect, Heat Capacity,Thermal Transport, High Temperature VSM


01-01-1990

The 3-gun sputter up system has been designed to deposit large area thin films and multilayers of various materials (metals, semiconductors, oxides, dielectrics) which can be deposited independently or in combinations of up to three at a time.


01-01-1990

To grow the oxide single crystals using an optical floating zone technique employing four halogen lamps and ellipsoidal mirrors.


01-01-1990

Five Muffle furnaces with max temp1600-1700°C. One tube furnace with maximum Temperature - 1700 °C


01-01-1990

Electrical heating furnace with Ar, N2 , O2 Gas flow environment and maximum Temperature - 1700 °C


01-01-1990

Electrical heating furnace with ambient condition suitable for preparing oxide sample and annealing sealed samples. Maximum Temperature - 1700 °C.


01-01-1990

For soft matter systhesis this lab has equipments such as: Zetasizer, Autotitrator, Ultrasonicator bath, Centrifuge, Vortexer, Controlled Temperature Bath, Magnetic stirrer, pH meter etc.


01-01-1990

Used for polarization property measurements like ferroelectric hysteresis, leakage current, fatigue measurements, retention, and imprint measurements on the samples



Technologies Developed

(31-03-2020) Development of Cold Neutron Source


Optimisation of liquid hydrogen moderator chamber location and geometry has been done using Monte Carlo simulations. Mechanical Stress Analysis of Cold Source has been completed.



31-12-2019

Experimental setup for direct measurement of the magnetocaloric effect (MCE), namely adiabatic temperature change (ΔТ) has been designed.


01-01-1990

The detector development facility makes variety of neutron detectors for the neutron scattering facility of SSPD. The team has also made detectors of other types.


01-01-1990

Neutron scattering experiments needs: Motor Position Control, Front End Nuclear Electronics, Data Acquistion Systems, Sample Environment Facility to set Temperature and Magnetic feild and Experiment Control Software. There are several developmental activities on this front.



Show Cases

25-Mar-2021