Giant voltage generating microcantilevers based on Ba0.85Ca0.15Zr0.1Ti0.9O3 and Co76Fe14Ni4Si5B for next-generation energy harvesters. (15th April 2020)

• Record Type: Journal Article
• Authors: Kumar, Ajith S.; Lekha, C.S. Chitra; Vivek, S.; Anantharaman, M.R.; Saravanan, K. Venkata; Nair, Swapna S.
• Is Part Of: Scripta materialia. Number 180(2020)
• Page Start: 11
• Page End: 15
• Publication Date: 2020-04-15
• Subjects: Magnetoelectric -- Multiferroic -- Piezoelectric -- Resonance -- BCZT -- Metglas; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.01.017
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Magnetoelectric thin-film heterostructures with piezoelectric Ba0.85 Ca0.15 Zr0.1 Ti0.9 O3 and magnetostrictive Co76 Fe14 Ni4 Si5 B are fabricated. Very high ME coupling coefficients of 8 V/(cm Oe) and ~5.8 V/(cm Oe) are observed for BCZT-MG-BCZT and MG-BCZT-MG trilayers at sub resonance. Micro cantilevers of multilayers with total thickness of 130 µm are also fabricated. The microcantilever of BCZT-MG-BCZT showed an enhanced resonance at a frequency of 840 Hz with MECC as high as ~1457 V/(cm Oe). These structures can be effectively employed as an active component in energy harvesters, sensors, and transducers due to their exceptional ME responses in the resonant and sub-resonant frequencies. Graphical abstract: Image, graphical abstract