Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 ( 2012)
Volume 2 (2011)
Volume 1 (2010)
Study The Influence Of Different Mol% BLTMNZ Doping On KNLN Ceramics By Using The XRD And Impedance spectroscopy

Shweta Thakur; Seema Sharma;Ashutosh Tiwari; Radheshyam Rai

Volume 7, Issue 1 , January 2016, , Pages 29-35


  Polycrystalline samples of (K0.45Na0.45Li0.1NbO3)1-x-(Ba0.96La0.04Ti0.815Mn0.0025 Nb0.0025Zr0.18 O3)x ceramics (where x = 0.1, 0.3, 0.5, 0.7 and 0.9) were prepared by using a high temperature solid state reaction technique. The XRD patterns of the BLTMNZ doped KNLN at room temperature with x = 0.7 have ...  Read More

Synthesis And Characterization Of CuO Electrospum Nanofiber Using Poly(vinyl Acetate)/Cu(CH3COO)2 Annealing Method

Seema Sharma; Rashmi Rani; Radheshyam Rai; T. S. Natarajan

Volume 4, Issue 10 , October 2013, , Pages 749-753


  One dimensional nanofibers of organic and inorganic materials have been used in filters, optoelectronic devices, sensors etc. It is difficult to obtain ultra fine fibers of inorganic materials having lengths in the order of millimeter as they tend to break during formation due to thermal and other mechanical ...  Read More

Study Of Strontium Doping On The Structural And Magnetic Properties Of YMnO3 ceramics

Radheshyam Rai; M. A.Valente;Andrei L. Kholkin; Indrani Coondoo

Volume 4, Issue 5 , May 2013, , Pages 354-358


  AnchorStructural and Magnetic properties are investigated for the Sr doped YMnO3 samples with different composition synthesized by a solid state reaction method. Sr doped YMnO3 is the most distorted perovskite of the RMnO3 series (R=rare earths); the observed sinusoidal magnetic structure is in contrast ...  Read More

Nonlinear Ferroelectric And Dielectric Properties Of Bi(Mg0.5Ti0.5)O3-PbTiO3 Perovskite Solid Solutions

Seema Sharma; Radheshyam Rai; D. A. Hall; Judith Shackleton

Volume 3, Issue 2 , April 2012, , Pages 92-96


  Polycrystalline samples of Bi(Mg0.5Ti0.5)O3-PbTiO3 (BMT-PT) solid solutions exhibit high ferroelectric Curie temperatures and are promising materials for high temperature piezoelectric devices. A morphotropic phase boundary (MPB) between ferroelectric rhombohedral and tetragonal phases occurs between ...  Read More

Sol-gel Processing and characterization Of nanometersized (Ba, Sr) TiO3 ceramics

Kavita Verma; Seema Sharma; Dhananjay K Sharma; Raju Kumar; Radheshyam Rai

Volume 3, Issue 1 , January 2012, , Pages 44-49


   Ba0.5Sr0.3TiO3 (BST 70/30) nanopowders have been prepared by the modified sol-gel method using barium acetate, strontium acetate and titanium isopropoxide as the precursor. The formation mechanism, phase evolution, and particle size have been investigated using TG/DTA, XRD, and SEM. The fine particles ...  Read More

Comparative study of structure, dielectric and electrical behavior of Ba(Fe0.5Nb0.5)O3 ceramics and their solid solutions with BaTiO3

N.K. Singh; Pritam Kumar; Radheshyam Rai

Volume 2, Issue 3 , September 2011, , Pages 200-205


  Dielectric properties of (1-x)Ba(Fe0.5Nb0.5)O3-xBaTiO3 (where x = 0.00, 0.05 and 0.10) solid solution ceramics at high temperature range of RT ~ 270 o C have been characterized in this paper. The above said polycrystalline ceramics with (x = 0.0, 0.05 and 0.10) have been produced via a mixed oxide route. ...  Read More

Synthesis, Characterization And Optical Properties Of Nanosized CdS Hollow Spheres

Radheshyam Rai; Seema Sharma

Volume 1, Issue 3 , December 2010, , Pages 269-273


  In the present paper, we synthesized the CdS hollow spheres by using PMMA sphere templates of 298-301 nm diameters and 20-51 nm of shell thickness. A CdS hollow sphere was characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), optical absorption and photoluminescence technique. ...  Read More

Study Of Structural And Electrical Properties Of Pure And Zn-Cu Doped SnO2

Radheshyam Rai

Volume 1, Issue 1 , June 2010, , Pages 55-58


  Numerous metal oxide semiconductor materials were reported to be usable as semiconductor gas sensor, such as ZnO, SnO2, and TiO2 and so on. The samples of Zn and Cu doped SnO2 (SnZnO3 and SnCuO3) have been synthesized by solid-state reaction method. Some aspect of crystal structure of the compound at ...  Read More

Structural And Dielectric Properties Of Dy2(Ba0.5R0.5)2O7 (R = W, Mo) Ceramics

N. K. Singh; Pritam Kumar; Hemchand Kumar; Radheshyam Rai

Volume 1, Issue 1 , June 2010, , Pages 79-82


  The polycrystalline samples of the pyrochlore-type Dy2(Ba0.5R0.5)2O7 (R = W, Mo) compounds have been prepared by a high-temperature solid-state reaction technique. Preliminary X-ray diffraction (XRD) studies and scanning electron micrographs (SEM) of the compounds at room temperature suggested that compounds ...  Read More