Communications in Physics最新文献

筛选

英文中文

Surface ferromagnetism of lead-free ferroelectric bismuth sodium titanate materials 无铅铁电钛酸铋钠材料的表面铁磁性

Communications in Physics Pub Date : 2024-04-23 DOI: 10.15625/0868-3166/19184

Dang Duc Dung, Tien Lam Vu, Huu Lam Nguyen, Q. Duong, Hoang Thoan Nguyen, Hoang Linh Nguyen, Ngoc Trung Nguyen

{"title":"Surface ferromagnetism of lead-free ferroelectric bismuth sodium titanate materials","authors":"Dang Duc Dung, Tien Lam Vu, Huu Lam Nguyen, Q. Duong, Hoang Thoan Nguyen, Hoang Linh Nguyen, Ngoc Trung Nguyen","doi":"10.15625/0868-3166/19184","DOIUrl":"https://doi.org/10.15625/0868-3166/19184","url":null,"abstract":"The role of complex surface defect on the magnetic at the (110) surface of bismuth sodium titanate (Bi0.5Na0.5TiO3) was discussed based on the first-principles calculation. The first-principle calculations for various types of surface defects exhibited the existence of magnetic moments for selected chemical and position defects. Specifically, Na and Bi vacancies induced large magnetic moments of 0.52 µB/f.u and 0.50 µB/f.u, respectively, which were larger than that of Ti vacancies of 0.01 µB/f.u. Interestingly, oxygen vacancies did not induce local magnetic moments. Furthermore, significant magnetic moments of 0.50 µB/f.u and 0.49 µB/f.u were obtained for Na and Bi interstitial defects, while the local magnetic moments were slightly achieved around 0.03 µB/f.u and 0.04 µB/f.u for Ti and O interstitial defects, respectively. Anti-site defects between Bi and Na at A-site in perovskite ABO3 structure exhibited magnetic moments of 0.55 µB/f.u for Na anti-site at Bi-site and 0.39 µB/f.u for Bi anti-site at Na-site. Interestingly, anti-site defects between the A-site and B-site in perovskite ABO3 structure resulted in larger magnetic moments, with values of 0.57 µB/f.u and 0.53 µB/f.u obtained for Ti anti-site defects at the Bi-site and Na-site, respectively. Additionally, magnetic moments of 0.50 µB/f.u and 0.54 µB/f.u were achieved for Bi and Na anti-site defects at the Ti-site, respectively. We expected that our work further contributed to the understanding of the role of surface defects in the magnetism of Bi0.5Na0.5TiO3 materials in integrating ferromagnetic properties into lead-free ferroelectric materials for smart electronic device applications.","PeriodicalId":504426,"journal":{"name":"Communications in Physics","volume":"117 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation between sintering temperature and dwell time on structural and ferroelectric properties of NiTiO3-CoFe2O4 ceramics 烧结温度和停留时间对 NiTiO3-CoFe2O4 陶瓷结构和铁电特性的影响

Communications in Physics Pub Date : 2024-01-13 DOI: 10.15625/0868-3166/18800

L. Bac, D. D. Dung, N. Tuan, N. Thoan, Pham Van Thang

引用次数: 0

首页上一页