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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (3): 452-460.DOI: 10.16553/j.cnki.issn1000-985x.2025.0208

• 研究论文 • 上一篇    下一篇

过渡金属掺杂 β -Ga2O3的电子结构和磁性能的第一性原理研究

王艳杰1,2(), 李豹1,2, 宋俊辉3, 何星灿1,2, 王超1,2, 杨帆1,2, 闫兴振1,2, 迟耀丹1,2, 杨小天4   

  1. 1.吉林建筑大学寒地建筑综合节能教育部重点实验室,长春 130118
    2.吉林建筑大学电气与计算机学院,长春 130118
    3.内蒙古电力(集团)有限责任公司阿拉善供电分公司,阿拉善 750300
    4.吉林师范大学,四平 136000
  • 收稿日期:2025-09-24 出版日期:2026-03-20 发布日期:2026-04-08
  • 作者简介:王艳杰(1989—),女,吉林省人,博士,讲师。E-mail:wangyanjie@jlju.edu.cn
  • 基金资助:
    吉林科技厅自然基金(YDZJ202501ZYTS656);国家自然科学基金(62374073);国家自然科学基金(62441402);吉林省教育厅重点项目(JKH2024036KJ)

First-Principles Study on Electronic Structure and Magnetic Properties of Transition Metal-Doped β -Ga2O3

WANG Yanjie1,2(), LI Bao1,2, SONG Junhui3, HE Xingcan1,2, WANG Chao1,2, YANG Fan1,2, YAN Xingzhen1,2, CHI Yaodan1,2, YANG Xiaotian4   

  1. 1.Key Laboratory of Architectural Cold Climate Energy Management,Ministry of Education,Jilin Jianzhu University,Changchun 130118,China
    2.College of Electrical and Computer Engineering,Jilin Jianzhu University,Changchun 130118,China
    3.Alashan Power Supply Branch of Inner Mongolia Electric Power (Group) Co. ,Ltd. ,Alashan 750300,China
    4.Jilin Normal University,Siping 136000,China
  • Received:2025-09-24 Online:2026-03-20 Published:2026-04-08

摘要: 本文采用第一性原理计算方法系统地研究了Ga空位和3d过渡金属元素Ti、V、Cr、Mn、Fe、Co、Ni和Cu掺杂对β-Ga2O3的几何结构、电子结构、稳定性及磁学性质的影响。计算结果表明,Ga空位和掺杂原子都使β-Ga2O3的几何结构产生了不同程度的局部畸变,但没有破坏β-Ga2O3自身结构的整体对称性。形成能计算结果表明,含Ga空位或掺杂原子的β-Ga2O3体系均是稳定的,并且在富O环境下更容易形成。更重要的,含Ga空位及Ti、V、Cr、Mn、Fe、Ni和Cu掺杂的β-Ga2O3体系基态是磁性的,其磁矩分别为2.51、0.67、0.12、3.00、2.05、1.00、1.00、1.92 μB。通过分析可知含Ga空位及Ti、V、Cr、Mn、Fe、Ni和Cu掺杂的β-Ga2O3体系的磁矩分布与空位或掺杂原子和近邻的氧原子杂化有关,其中过渡金属元素掺杂的β-Ga2O3体系中的磁矩主要来源于3d过渡金属掺杂原子的贡献。

关键词: β-Ga2O3; 过渡元素掺杂; 第一性原理; 密度泛函理论; 磁学性质; 电子结构

Abstract: In this paper, the first-principles calculation method was adopted to systematically investigate the effects of Ga vacancies and 3d transition metal elements Ti, V, Cr, Mn, Fe, Co, Ni and Cu doping on the geometric structure, electronic structure, stability and magnetic properties of β-Ga2O3.The calculation results show that both Ga vacancies and doped atoms cause local distortions of different degrees in the geometric structure of β-Ga2O3, but do not destroy the overall symmetry of β-Ga2O3 structure. The formation energy calculation results indicate that β-Ga2O3 systems containing Ga vacancies or doped atoms are all stable and are more likely to be formed in an oxygen-rich environment. More importantly, the ground states of the β-Ga2O3 systems containing Ga vacancies and Ti, V, Cr, Mn, Fe, Ni and Cu doping are magnetic, with magnetic moments of 2.51, 0.67, 0.12, 3.00, 2.05, 1.00, 1.00 and 1.92 μB, respectively. Based on the analysis, it can be concluded that the magnetic moment distribution in β-Ga2O3 systems containing Ga vacancies or doped with Ti, V, Cr, Mn, Fe, Ni, and Cu is associated with the hybridization between the vacancy/dopant atom and its neighboring oxygen atoms. In transition metal-doped β-Ga2O3 systems, the magnetic moments primarily originate from the contribution of 3d transition metal dopants.

Key words: β-Ga2O3; transition metal doping; first-principle; density functional theory; magnetic property; electronic structure

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