A M Varaprasad
Articles written in Bulletin of Materials Science
Volume 2 Issue 4 November 1980 pp 239-249 Communications
Structural and dielectric studies of some niobate-titanate systems
A M Varaprasad A L Shashi Mohan D K Chakrabarty A B Biswas
Ferroelectric ceramics of the general formula
Volume 3 Issue 1 February 1981 pp 1-8
Some barium titanate based dielectrics
A M Varaprasad D K Chakrabarty A B Biswas
Some new potential dielectric materials have been made through the cross-substitution of Ba2+ by a 1:1 molar combinations of tri-(La3+) and mono-valent (Li+, Na+, K+) ions at the Ba2+ site in BaTiO3. Chemical analysis shows that compositions in the potassium series are about 6·1% deficient in their K2O content and exhibit interesting dielectric relaxations. The cross-substitution has lowered the
Volume 8 Issue 5 December 1986 pp 567-575
Magnetic hysteresis and crystallization studies on metallic glass alloy Fe67Co18B14Si1
A M Varaprasad C Radhakrishnamurthy
Magnetic hysteresis studies were carried out on Metglas 2605 Co(Fe67Co18B14Si1) samples, cut parallel and perpendicular to the ribbon axis and annealed at different temperatures. The samples annealed at 450°C for 2 hr show a coercive force of 8·75 Oe and 0·60 Oe in the parallel and perpendicular directions respectively. Electron probe micro analysis studies revealed the onset of primary crystallization at 400°C and a gradual displacement of B and Si from the lattice as the annealing temperature was increased to 450°C. The observed large coercive force is due to an increase in anisotropy resulting from an intergrowth pattern of the type Fe
Volume 45, 2022
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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