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Synthesis and microwave dielectric properties of Sr3Zn1−xMgxNb2O9 phases

Thirumal, Meganathan; Jawahar, Isuhak N; Surendiran, Kuzhichalil P; Mohanan, Pezholil; Ganguli, Ashok K (2002)

Oxides of the type, Sr3Zn1−xMgxNb2O9 (0≤x≤1) have been obtained by the ceramic method. These oxides crystallize in the hexagonal cell corresponding to ordered triple perovskites. Sintered disks show nearly frequency-independent ...

Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9: synthesis, structural and dielectric studies

Thirumal, M; Murugan, G Senthil; Varma, K B R; Ganguli, A K (2000)

Oxides of the families Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9 were obtained by the solid state reaction route at 1573 K and were found to crystallize in the disordered (cubic) perovskite structure. In Ba3ZnTa2−xNbxO9 and ...

Polymeric citrate precursor route to the synthesis of nano-sized barium lead titanates

Arya, P R; Jha, P; Subbanna, G N; Ganguli, A K (2003)

Monophasic oxides of the formula, Ba1−xPbxTiO3 (0≤x≤1.0) were obtained at temperatures close to 500 °C from polymeric precursors formed using citric acid and ethylene glycol. These oxides were found to be tetragonal for ...

Dielectric properties of lead zirconium titanates with nanometer size grains synthesized by the citrate precursor route

Jha, P; Arya, P R; Ganguli, A K (2003)

Monophasic oxides of the formula, PbZrxTi1−xO3 (0.0≤x≤0.75) were obtained at temperatures close to 500 °C from polymeric precursors formed using citric acid and ethylene glycol. The oxides were found to be tetragonal for ...

(La0.4Ba0.4Ca0.2)(Mn0.4Ti0.6)O3: A new titano-manganate with a high dielectric constant and antiferromagnetic interactions

Jha, Pika; Rai, Sarita; Ramanujachary, Kandalam V; Lofland, Samuel E; Ganguli, Ashok K (2004)

A new perovskite-based titano-manganate, (La0.4Ba0.4Ca0.2)(Mn0.4Ti0.6)O3, has been prepared by the ceramic route at 1100°C. This oxide was found to possess the cubic perovskite structure with ‘a’=3.9477(23) Å (space group ...

Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9 (0≤x≤1): synthesis, structure and dielectric properties

Thirumal, M; Jawahar, I N; Surendiran, K P; Mohanan, P; Ganguli, A K (2002)

Oxides belonging to the families Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9 were synthesized by the solid state reaction route. Sintering temperatures of 1300°C led to oxides with disordered (cubic) perovskite structure. However, ...