Characterization on structural and electrical properties of Manganesedoped potassium sodium niobate (KNN) thin film by sol-gel method

Azman, Muhd Afiq Hafizuddin and Abd Rashid, Mohd Warikh and Haji Azlan, Umar Al-Amani and Mohamad, Noraiham and Abd Rahim, Toibah and Mat Harttar @ Mohd Hatta, Maziati Akmal and Moriga, Toshihiro (2025) Characterization on structural and electrical properties of Manganesedoped potassium sodium niobate (KNN) thin film by sol-gel method. Journal of Advanced Research in Micro and Nano Engineering, 29 (1). pp. 36-45. ISSN 2756-8210

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Abstract

The aim of this study is to create and examine thin layers of Mn-doped potassium sodium niobate (KNN) using the sol-gel method. The objective is to examine and resolve the problem of elevated leakage current density that arises at high electric fields in KNN films. The objective is to enhance the dielectric and ferroelectric characteristics by including manganese (Mn) dopants at various concentrations ranging from pure KNN to 0.9%, while maintaining acceptable insulation resistance. X-ray diffraction (XRD) was employed to investigate the crystalline structure of Mn-doped KNN thin films. Based on the XRD analysis, the Mn-doped KNN thin films exhibit an orthorhombic crystal structure during manufacture. The presence of KNN thin films is confirmed by the XRD peaks, indicating a successful synthesis. The microstructure and surface morphology of the thin films were examined using field-emission scanning electron microscopy (FESEM). The most significant outcomes in terms of dense grain growth and uniform grain size were observed in thin films of KNN doped with 0.3% Mn. Based on the findings from the FESEM and AFM, the cracks were covered with thin films of uniform thickness, and the surface data of the KNN thin films did not provide any support for them. Atomic Force Microscopy (AFM) and Piezoresponse Force Microscopy (PFM) analysis indicate a notable enhancement in the surface morphology and the value of the piezoelectric coefficient in Mn-doped KNN thin films, with an increase of 0.3%.

Item Type:	Article (Journal)
Uncontrolled Keywords:	KNN; manganese-doped; thin film; solgel; surface morphology; interplanar spacing
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Science Kulliyyah of Engineering
Depositing User:	Dr Maziati Akmal
Date Deposited:	19 Feb 2025 11:48
Last Modified:	19 Feb 2025 11:48
URI:	http://irep.iium.edu.my/id/eprint/119595

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