Er³⁺and Er³⁺/Yb³⁺Ions Embedded in Nano-Structure BaTi_0.9Sn_0.1O₃: Structure, Morphology and Dielectric Properties  

作　　者：Olfat El Sayed Inas Battisha Abdelilah Lahmar Mimoun El Marssi Olfat El Sayed;Inas Battisha;Abdelilah Lahmar;Mimoun El Marssi(Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt;Solid State Physics Department, Physics Research Division, National Research Centre, Dokki, Giza, Egypt;Laboratory of Condensed Matter Physics (LPMC), University of Picardie Jules Verne, Amiens, France)

机构地区：[1]Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt [2]Solid State Physics Department, Physics Research Division, National Research Centre, Dokki, Giza, Egypt [3]Laboratory of Condensed Matter Physics (LPMC), University of Picardie Jules Verne, Amiens, France

出　　处：《World Journal of Nano Science and Engineering》2021年第2期25-43,共19页纳米科学与工程（英文）

摘　　要：Barium titanate tin oxides BaTi_0.9Sn_0.1O₃ referred to as (BTSO) doped with 0.5Er³⁺ and co-doped with (0.75 and 1) Yb³⁺ ions, were prepared using a modified sol-gel method and calcinated at 1050<span style="white-space:nowrap;">?</span>C in the air for 4 h. The influence of the selected rare earth element on the structure morphology, dielectric properties behavior was investigated. From TEM micrographs, it has appeared that the particles have a spherical shape with a small size in nanoscale. The average particle size is determined both by TEM and XRD diffraction was found to be in agreement and within the range between 45.9 and 57.7 nm. The effects of Lanthanide incorporation on the evolution of these nano-crystalline structures were followed by XRD and (FTIR). The XRD patterns give rise to a single perovskite phase, while the tetragonality was found to decrease gradually with Er³⁺ and Er³⁺/Yb³⁺ ions, respectively. FTIR results showed enhancement of the crystallinity and the absence of carbonates upon increasing Yb³⁺ ions concentration from 0.75 up to 1 mol%. The dielectric and conductivity properties were found to be enhanced by the nature and the concentration of the lanthanide element (Er³⁺, Yb³⁺) in the BTSO host lattice. The Curie temperature (T_c) shifted to a lower value from 117 for BTSO: 0.5Er to 93 for BTSO: 0.5Er/1Yb and the permittivity <em>ε’</em> increased from 3972 to 6071, so BTSO: 0.5Er/1Yb good crystalline material candidate for capacitors application due to its higher permittivity.Barium titanate tin oxides BaTi_0.9Sn_0.1O₃ referred to as (BTSO) doped with 0.5Er³⁺ and co-doped with (0.75 and 1) Yb³⁺ ions, were prepared using a modified sol-gel method and calcinated at 1050<span style="white-space:nowrap;">?</span>C in the air for 4 h. The influence of the selected rare earth element on the structure morphology, dielectric properties behavior was investigated. From TEM micrographs, it has appeared that the particles have a spherical shape with a small size in nanoscale. The average particle size is determined both by TEM and XRD diffraction was found to be in agreement and within the range between 45.9 and 57.7 nm. The effects of Lanthanide incorporation on the evolution of these nano-crystalline structures were followed by XRD and (FTIR). The XRD patterns give rise to a single perovskite phase, while the tetragonality was found to decrease gradually with Er³⁺ and Er³⁺/Yb³⁺ ions, respectively. FTIR results showed enhancement of the crystallinity and the absence of carbonates upon increasing Yb³⁺ ions concentration from 0.75 up to 1 mol%. The dielectric and conductivity properties were found to be enhanced by the nature and the concentration of the lanthanide element (Er³⁺, Yb³⁺) in the BTSO host lattice. The Curie temperature (T_c) shifted to a lower value from 117 for BTSO: 0.5Er to 93 for BTSO: 0.5Er/1Yb and the permittivity <em>ε’</em> increased from 3972 to 6071, so BTSO: 0.5Er/1Yb good crystalline material candidate for capacitors application due to its higher permittivity.

关 键 词：Sol-Gel Nano-Structure BaTiSnO₃-Doped “Er³⁺ Ion” or “Er³⁺/Yb³⁺ Ion” Dielectric Properties 

分 类 号：O61[理学—无机化学]