TY - JOUR
T1 - New tungsten pyrophosphate with cubic zirconium pyrophosphate-type structure
AU - Teweldemedhin, Z. S.
AU - Ramanujachary, K. V.
AU - Greenblatt, M.
N1 - Funding Information:
We thank Prof. W. H. McCarroll for his helpful comments and critical reading of the manuscript. We also thank Dr. R. Fuller for his help in preparing the manuscript. This work was supported by the National Science Foundations-Solid State Chemistry Program Grants DMR-90-19031.
PY - 1993/5
Y1 - 1993/5
N2 - Tungsten pyrophosphate, WP2O7, was prepared by reacting mixtures of (NH4)2HPO4, WO3 and W at 900 °C in an evacuated quartz tube. Powder X-ray diffraction study shows the compound to be isostructural with cubic zirconium pyrophosphate, ZrP2O7, with a = 7.947 (1) A ̊. The electrical resistivity of the compound at room temperature is in the Mega-Ohm region indicating insulating behavior. The magnetization study made on a pelletized sample shows a paramagnetic behavior similar to MoP2O7. The effective magnetic moment calculated in the temperature range 100-300 K is 2.4 BM.
AB - Tungsten pyrophosphate, WP2O7, was prepared by reacting mixtures of (NH4)2HPO4, WO3 and W at 900 °C in an evacuated quartz tube. Powder X-ray diffraction study shows the compound to be isostructural with cubic zirconium pyrophosphate, ZrP2O7, with a = 7.947 (1) A ̊. The electrical resistivity of the compound at room temperature is in the Mega-Ohm region indicating insulating behavior. The magnetization study made on a pelletized sample shows a paramagnetic behavior similar to MoP2O7. The effective magnetic moment calculated in the temperature range 100-300 K is 2.4 BM.
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U2 - 10.1016/0025-5408(93)90124-V
DO - 10.1016/0025-5408(93)90124-V
M3 - Article
AN - SCOPUS:0027594798
VL - 28
SP - 427
EP - 434
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 5
ER -