Magnetic properties of new (1−x)Bi1/2Na1/2TiO3+xBaNiO3−δ solid solution materials

• Published in: Applied physics. A, Materials science & processing Vol. 128; no. 2
• Main Authors: Dung, Dang Duc, Thoan, Nguyen Hoang, Van Vinh, Phan, Lam, Nguyen Huu, Lam, Vu Tien, Luong, Pham Dinh, Van, Duong Quoc, Odkhuu, Dorj
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2022; Springer Nature B.V
• Subjects: Alkaline earth metals; Applied physics; Characterization and Evaluation of Materials; Chemical synthesis; Condensed Matter Physics; Density functional theory; Ferroelectric materials; Ferroelectricity; Ferromagnetic materials; First principles; Lead free; Machines; Magnetic properties; Manufacturing; Materials science; Nanotechnology; Optical and Electronic Materials; Optical properties; Photoluminescence; Physics; Physics and Astronomy; Processes; Raman spectra; Solid solutions; Surfaces and Interfaces; Thin Films; Transition metals; Na; Bi; BaNiO; Ferromagnetism; TiO; Sol–gel; Lead-free ferroelectric
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-022-05281-x

New solid solution (1−x)Bi 1/2 Na 1/2 TiO 3 +xBaNiO 3−δ materials were synthesized by a chemical method. The X-ray diffraction and Raman scattering structure studies confirmed that the BaNiO 3−δ materials were well soluted in the host Bi 1/2 Na 1/2 TiO 3 materials. The random incorporation of Ba and Ni into the host Bi 1/2 Na 1/2 TiO 3 materials was displayed by the optical properties where the optical bandgap values were reduced, and the photoluminescence was suppressed. The complex magnetic properties of Bi 1/2 Na 1/2 TiO 3 materials were obtained as a function of BaNiO 3−δ amounts in the solid solutions. The role of co-modification of A - and B -sites via alkaline earth metals and transition metals as substitution and interstitially on magnetic properties of Bi 1/2 Na 1/2 TiO 3 materials was experimentally proposed, which is further supported by first-principles density functional theory calculations. We expected that our work provided a new method to inject the ferromagnetic properties in lead-free ferroelectric materials for smart electronic applications.