Bulletin  of  Materials  Science

Volume  25,  No.  4,  August 2002

CONTENTS


Cover:  SEM of co-precipitated NiO/TiO2 samples calcined at 700°C for 8 h. For details, 
see p. 273.


Synthesis
Synthesis of Ba3ZnNb2O9--Sr3ZnNb2O9 solid solution and their dielectric properties

M Thirumal and A K Ganguli

259
Self-propagating high temperature synthesis and magnetic properties of Ni0.35Zn0.65Fe2O4 powders

Yao Li, Jiupeng Zhao and Jiecai Han

263

Phase Transitions

Crystal structure transformation of TiO2 in presence of Fe2O3 and NiO in air atmosphere

S Riyas, V Ahmed Yasir and P N Mohan Das

267

Structure determination at room temperature and phase transition studies above T
in ABi4Ti4O15 (A = Ba, Sr or Pb)

 

G Nalini and T N Guru Row

275

Catalytic Materials

Catalytic characterization of bi-functional catalysts derived from Pd--Mg--Al layered double hydroxides

N N Das and S C Srivastava

283

Alloys and Steels

Metadynamic recrystallization in C steels

A R Morgridge

291
Fatigue crack growth retardation in spot heated mild steel sheet

B B Verma and P K Ray

301
Hyperfine field distributions in disordered Mn2CoSn and Mn2NiSn Heusler alloys

N Lakshmi, Anil Pandey and K Venugopalan

309
Effect of alloying with zinc on SFE of aluminium by study of lattice imperfections in cold worked Al--Zn alloys

G Karmakar, R Sen, S K Chattopadhyay, A K Meikap and S K Chatterjee

315
Impact toughness of high strength low alloy TMT reinforcement ribbed bar

Bimal Kumar Panigrahi and Surendra Kumar Jain

319

Semiconductors

Experimental f" of As at 170, 200, 250 and 300 K from the Bijvoet pairs of GaAs

G Raja Sudha, K Vimala Devi, D Arthi, S Prasanna Subramanian,
N Srinivasan and R Saravanan


325
On the symmetry of phosphorous doped ZnSe

N Sankar and K Ramachandran

329
Si diffusion in GaAs

P Murugan, R Pothiraj, S D D Roy and K Ramachandran

335

Polymers

Thermally induced structural changes in Nomex fibres

Anjana Jain and Kalyani Vijayan

341

Ferroelectrics

Structural, dielectric and transport properties of Pb(Mn0.5W0.5)O3

V L Mathe, K K Patankar, S D Lotke, P B Joshi and S A Patil

347

Magnetic Materials

Infrared absorption spectroscopic study of Nd3+ substituted Zn--Mg ferrites

B P Ladgaonkar, C B Kolekar and A S Vaingankar

351

Liquid Crystals

Azomesogens with 1,2,4-trisubstituted benzene moiety

R A Vora and A K Prajapati

355

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