K Sooryanarayana
Articles written in Bulletin of Materials Science
Volume 21 Issue 1 February 1998 pp 87-92 Research Articles
Optical and structural characteristics of strontium doped calcium tartrate crystals
K Suryanarayana S M Dharmaprakash K Sooryanarayana
We report here on the optical and structural characteristics carried out on strontium doped calcium tartrate tetrahedral single crystalline materials obtained by diffusing calcium and strontium ions through silica gel impregnated with optically active tartaric acid. Linear optical properties of this material such as refractive index, birefringence and transmission characteristics were measured in the wavelength range 200 nm <
Volume 21 Issue 6 December 1998 pp 499-502 Rapid Communication
Influence of inherent strain on the curie temperature of rare earth ion-doped bismuth vanadate
K Sooryanarayana T N Guru Row R Somashekar K B R Varma
X-ray line broadening is found to be an effective parameter to estimate the strain associated with rare earth ion (Gd3+)-doped polycrystalline bismuth vanadate(Bi2VO5·5). The strain increases with increasing Gd3+ concentration. It is anisotropic and found to be maximum in (111) plane. The Curie temperature which is known to decrease with increase in the rare earth ion concentration in these compounds is correlated with increase in strain.
Volume 22 Issue 1 February 1999 pp 1-7 Rapid Communication
Crystallographic data on axially compressed Kevlar 49 fibres
R V Iyer Kalyani Vijayan K Sooryanarayana T N Guru Row
Axially compressed Kevlar 49 fibres have been examined by X-ray diffraction methods. The most prominent effect of axial compression is the anisotropic deformation of the unit cell. Whereas the
Volume 46, 2023
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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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