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Articles you may be interested inRelationship between magneto-capacitance-voltage characteristics and magnetoresistance of Au ∕ Cr 2 O 3 ∕ Cr 2 O 3 − x ∕ Fe Cr ∕ Ce O 2 ∕ Si metal-insulator-semiconductor capacitor

The room-temperature phase of BaZnGeO4 shows two types of superlattice reflexions. The first appear on the (001)* reciprocal-lattice plane, giving relationships a = asu b --bsu b and b = asu b + 2bsu b. The second type appear along the e* direction, and are very weak and incommensurate with a relationship e _~ 4esu b. The superstructure has been determined neglecting the incommensurate reflexions. The space group is P63 with unit-cell dimensions a = 9.2905 (3), c = 8.728 (1) A and Z = 6. The final R is 0.0464 for 306 independent reflexion data collected on a four-circle diffractometer. The crystal has a stuffed structure derived from the high-tridymite framework. Ba atoms are surrounded by nine oxygen atoms with Ba-O distances ranging from 2.55 (6) to 3.75 (8)/~. Ordering of Ge and Zn atoms is observed between two independent tetrahedral sites, giving average tetrahedral cation-oxygen distances of 1.76 (6) and 1.90 (7)/~ for the respective tetrahedra.

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