Mn-doped (Bi0.5Na0.5) TiO3 thin film with low leakage current density and high ferroelectric performance

Shi, Min; Si, Zhuolin; Men, Enyang; Zhao, Zheng; Ye, Xu; Zuo, Ruzhong; Guo, Li; Hu, Kunzhuang

doi:10.1007/s10854-021-05435-2

Cited by 5 publications

(1 citation statement)

References 49 publications

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“…All peaks were clearly matched with standard BNT thin film X-ray diffraction pattern. [32][33][34][35][36][37][38] It is significant to note that unlike BNT based ceramic systems [39][40][41][42][43] specially 1−xBNT-xLN ceramics, where a MPB between rhombohedral and tetragonal structure was located in the range of 0.02 ⩽ x ⩽ 0.04, 31 here all thin film compositions in studied range show rhombohedral structure. For more understanding of crystal structure, lattice parameters were calculated for all compositions using X-powder and listed in Table I.…”

Section: Resultsmentioning

confidence: 90%

Study of Structural and Electrical Properties of Li and Nb Modified BNT Thin Film and Observation of Enhanced Electrocaloric Effect near Room Temperature

Singh

Gupta²

2022

ECS J. Solid State Sci. Technol.

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A detailed investigation was done on Li and Nb modified Bi0.5Na0.5TiO3 (BNT) thin films where structural, dielectric, ferroelectric, and electrocaloric properties were studied. All thin films were synthesized using pulsed laser deposition. Structural investigation revealed that addition of Li and Nb do not alter the parent rhombohedral structure and all compositions were observed to have rhombohedral structure. However Ferroelectric and dielectric analysis clearly revealed that addition of Li and Nb affect the Ferroelectric (FE) -Antiferroelectric (AFE) phase transition temperature (Td, depolarization temperature) and bring it down towards the room temperature and consequently a mixed phase of FE and AFE was observed near room temperature for composition x = 0.06. A sudden change in polarization in x = 0.06 composition with increasing temperature, subsequently leaded to significantly high (∂P/∂T)E , along with FE-AFE transition contributed to large electrocaloric (ΔT) 4.32 K in composition x = 0.06 ~ 35℃.

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