Unknown

Dataset Information

0

Intrinsic and tunable ferromagnetism in Bi0.5Na0.5TiO3 through CaFeO3-? modification.

ABSTRACT: New (1-x)Bi0.5Na0.5TiO3?+?xCaFeO3-? solid solution compounds were fabricated using a sol-gel method. The CaFeO3-? materials were mixed into host Bi0.5Na0.5TiO3 materials to form a solid solution that exhibited similar crystal symmetry to those of Bi0.5Na0.5TiO3 phases. The random distribution of Ca and Fe cations in the Bi0.5Na0.5TiO3 crystals resulted in a distorted structure. The optical band gaps decreased from 3.11?eV for the pure Bi0.5Na0.5TiO3 samples to 2.34?eV for the 9?mol% CaFeO3-?-modified Bi0.5Na0.5TiO3 samples. Moreover, the Bi0.5Na0.5TiO3 samples exhibited weak photoluminescence because of the intrinsic defects and suppressed photoluminescence with increasing CaFeO3-? concentration. Experimental and theoretical studies via density functional theory calculations showed that pure Bi0.5Na0.5TiO3 exhibited intrinsic ferromagnetism, which is associated with the possible presence of Bi, Na, and Ti vacancies and Ti3+-defect states. Further studies showed that such an induced magnetism by intrinsic defects can also be enhanced effectively with CaFeO3-? addition. This study provides a basis for understanding the role of secondary phase as a solid solution in Bi0.5Na0.5TiO3 to facilitate the development of lead-free ferroelectric materials.

SUBMITTER: Hung NT 

PROVIDER: S-EPMC7148307 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Intrinsic and tunable ferromagnetism in Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> through CaFeO<sub>3-δ</sub> modification.

Hung N T NT   Lam N H NH   Nguyen A D AD   Bac L H LH   Trung N N NN   Dung D D DD   Kim Y S YS   N Tsogbadrakh   Ochirkhuyag T T   Odkhuu D D  

Scientific reports 20200410 1

New (1-x)Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> + xCaFeO<sub>3-δ</sub> solid solution compounds were fabricated using a sol-gel method. The CaFeO<sub>3-δ</sub> materials were mixed into host Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> materials to form a solid solution that exhibited similar crystal symmetry to those of Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> phases. The random distribution of Ca and Fe cations in the Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> crystals  ...[more]

Similar Datasets

Unknown Structure, optical and magnetic properties of new Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>- SrMnO<sub>3-δ</sub> solid solution materials.
| S-EPMC6890638 | biostudies-literature
Unknown A Novel Highly Sensitive NO<sub>2</sub> Sensor Based on Perovskite Na<sub>0.5+x</sub>Bi<sub>0.5</sub>TiO<sub>3-δ</sub> Electrolyte.
| S-EPMC5504058 | biostudies-literature
Unknown Monoclinic distortion, polarization rotation and piezoelectricity in the ferroelectric Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>.
| S-EPMC6038949 | biostudies-literature
Unknown Local disorder in Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-piezoceramic determined by 3D electron diffuse scattering.
| S-EPMC5624983 | biostudies-literature
Unknown Boosting the Humidity Performances of Na<sub>0.5</sub>Bi<sub>x</sub>TiO<sub>3</sub> by Tuning Bi Content.
| S-EPMC9315792 | biostudies-literature
Unknown Interfacial Oxygen Octahedral Coupling-Driven Robust Ferroelectricity in Epitaxial Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> Thin Films.
| S-EPMC10351392 | biostudies-literature
Unknown Enhanced Energy Storage Performance in Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-Based Relaxor Ferroelectric Ceramics via Compositional Tailoring.
| S-EPMC9457184 | biostudies-literature
Unknown A new strategy for large-scale synthesis of Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> nanowires and their application in piezocatalytic degradation.
| S-EPMC9417517 | biostudies-literature
Unknown High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-based ceramics.
| S-EPMC9066180 | biostudies-literature
Unknown Structure and dielectric properties of (1-x)Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3-x</sub>BaTiO<sub>3</sub> piezoceramics prepared using hydrothermally synthesized powders.
| S-EPMC8316791 | biostudies-literature