Please use this identifier to cite or link to this item:
|Title:||Samarium and yttrium doping induced phase transitions and their effects on the structural, optical and electrical properties of Nd2Sn2O7 ceramics|
|Authors:||A. F Qasrawi|
|Keywords:||neodymium stannate, rare earth doping, lattice parameters, band gap, conductivity|
|Publisher:||Materials Research Express -IOP|
|Abstract:||In this work, the effects ofSm+3 and Y+3 doping onto the structural, optical and electrical properties of Nd2Sn2O7 are investigated. An atomic content of 3.49% and 4.29% ofSm and Y, respectively, were sufficient to alter the physical properties of the Nd2Sn2O7. Particularly, the Y+3 ionic substitution decreased the lattice constant, narrows the energy band gap, changed the conductivity type from n- to p- type and increased the electrical conductivity by 73 timeswithout changing the cubic nature of structure of the pyrochlore ceramics. On the other hand, Sm+3 ionic substitutions changed the cubic structure to hexagonal or trigonal and forced optical transitions in the infrared range of light. The energy band gap shrunk from 3.40 to 1.40 eV, the defect density is reduced and the electrical conductivity increased by 47 times viaSm doping. These doping agents’ makes the neodymium stannate pyrochlore ceramics more appropriates for optoelectronic applications|
|Appears in Collections:||Faculty & Staff Scientific Research publications|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.