Structural and electrical properties of 0.98(KO\(_{0.5}\)NaO\(_{0.5}\)NbOO\(_{3}\))-0.02(BiO\(_{0.5}\)NaO\(_{0.5}\)TiOO\(_{3}\)) ceramics

Swayam Aryam  BEHERA; Sugato HAJRA; Swati  PANDA; Ali AMANAT; P. G. R. ACHARY

doi:10.55713/jmmm.v33i4.1894

ผู้แต่ง

Swayam Aryam BEHERA Department of Chemistry, Siksha O Anusandhan University, Bhubaneswar-751030, India
Sugato HAJRA Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, Republic of Korea
Swati PANDA Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, Republic of Korea
Ali AMANAT Department of New Materials and Nanotechnology, National University of Science and Technology MISiS, Moscow, Russia
P. G. R. ACHARY Department of Chemistry, Siksha O Anusandhan University, Bhubaneswar-751030, India

DOI:

https://doi.org/10.55713/jmmm.v33i4.1894

คำสำคัญ:

Lead-Free, Piezoelectric, Ferroelectric, Potassium sodium niobate, Bismuth sodium titanate

บทคัดย่อ

In the present communication, lead-free ceramics having composition 0.98(K_0.5Na_0.5NbO₃)-0.02(Bi_0.5Na_0.5TiO₃) were synthesized by a high-temperature solid-state reaction route. The Rietveld refinement for the 0.98KNN-0.02BNT reveals an MPB with phase fraction Amm2 (87.76 %) and Pm-3m (12.27%). The SEM study predicted a mean diameter of 0.98KNN-0.02BNT grains as 0.52µm±0.19. The 0.98KNN-0.02BNTceramic displayed a typical hysteresis loop with a remnant polarisation(P_r) of 7.0 μC/cm², saturation polarization (P_s) of 16 μC/cm^2,and a coercive field (E_c) of 26 kV/mm. The electrical, Raman spectra, dielectric, and hysteresis loop study supported a morphotropic phase boundary. The synthesized KNN-BNT lead-free material can be an excellent material for designing new devices like ultrasonic transducers and piezo-actuators.

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