Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10714160 | Physica B: Condensed Matter | 2012 | 6 Pages |
Abstract
We report the synthesis of sodium zinc diphosphate (Na2ZnP2O7) using a domestic microwave oven (2.45Â GHz) and metal ion doped sodium zinc diphosphate (Na1.88Gd0.04ZnP2O7/Na1.92M0.04ZnP2O7 (M=Mn and Cu)) by a solid state metathesis reaction. All the materials were characterized by powder X-ray diffraction (XRD) and infrared spectroscopy (IR). These metal doped diphosphates were crystallized in a tetragonal lattice with space group P42/mnm. The IR spectra of all the samples were characterized by bands due to the P2O74â group. The powder electron spin resonance (ESR) spectrum of Na1.88Gd0.04ZnP2O7 gave a characteristic “U” type spectrum. The powder ESR spectrum of Na1.92Mn0.04ZnP2O7 consists of six lines while Na1.92Cu0.04ZnP2O7 gave a broad profile. All the doped metal ions occupy the Na+ site in the diphosphate lattice. The broad emission band at 614Â nm (red band) observed for Na1.92Mn0.04ZnP2O7 is assigned to an electronic transition T14(G4)âA16(S6) of Mn2+ in distorted octahedral coordination.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
B. Vijaya Kumar, M. Vithal,