Preparation of Non-Stoichiometric Nd_<1-x>MnO_<3-y> by Coprecipitation Method
The coprecipitate of carbonates was obtained by titrating an ammonium carbonate solution into an hydrochloric solution of MnO<SUB>2</SUB> and Nd<SUB>2</SUB>O<SUB>3</SUB> . The non-stoichiometric perovskite-type oxide, Nd<SUB>1−x</SUB>MnO<SUB>3−y</SUB> was synthesized by firing the coprecipitate in air without flowing. For the products of Nd<SUB>1</SUB>MnO<SUB>3−y</SUB> prepared at 1100 °C, the single phase showing the stable y/x value 1.5 was obtained in the x = 0.05 to 0.20 region, and a by-product Mn<SUB>3</SUB>O<SUB>4</SUB> was appeared in x = 0.25.
- Chemistry letters
Chemistry letters 1999(6), 463-464, 1999-06-05
The Chemical Society of Japan