天津师范大学学报（自然科学版）2024，Vol.44Issue(2)：19-25,7.DOI:10.19638/j.issn1671-1114.20240204
具有Ruddlesden-Popper结构的杂化非本征铁电体(Ca1-xSmx)3Ti2O7陶瓷的制备及其物理性能
Preparation and physical properties of improper ferroelectric(Ca1-xSmx)3Ti2O7 ceramics with Ruddlesden-Popper structure
MARCO Antonio López-Águila 1柳志旭 1王守宇 2黄聪 1刘卫芳1
作者信息
- 1. 天津大学理学院,天津 300350
- 2. 天津师范大学物理与材料科学学院,天津 300387
- 折叠
摘要
Abstract
In order to investigate the influence of rare earth ion doping on the physical properties of Ca3Ti2O7,the ceramic sam-ples of Sm3+ion-doped(Ca1-xSmx)3Ti2O7(x=0,0.02,0.04)were prepared by solid-state reaction method.The crystal structure,optical properties,electrical properties and magnetic properties of the samples were analyzed by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),UV-VIS absorption spectroscopy and first-principles calculations.The experimental results show that with the increase of Sm3+ion content,the unit cell parameters of(Ca1-xSm,)3Ti2O7 gradually increase.The leakage cur-rent of the samples decreases with the increase of Sm3+doping because Sm3+doping led to a reduction in oxygen vacancy content.Additionally,the optical bandgap of the samples exhibits an increasing trend with the growing concentration of Sm3+ions.In addition,first-principles studies indicate that Sm3+doping can induce magnetic properties in the system,further enriching the physical properties of the material.关键词
(Ca1-xSmx)3Ti2O7陶瓷/铁电性/氧空位/光学带隙/第一性原理Key words
(Ca1-xSmx)3Ti2O7 ceramic/ferroelectricity/oxygen vacancy/optical band-gap/first-principles分类
数理科学引用本文复制引用
MARCO Antonio López-Águila,柳志旭,王守宇,黄聪,刘卫芳..具有Ruddlesden-Popper结构的杂化非本征铁电体(Ca1-xSmx)3Ti2O7陶瓷的制备及其物理性能[J].天津师范大学学报（自然科学版）,2024,44(2):19-25,7.
