Development of a novel lead free (CoFe1.9Bi0.1O4/BaTi0.89Sn0.11O3/CoFe1.9Bi0.1O4) magnetoelectric composite via new design strategy
Source abstract
Abstract
A novel lead free ceramic based magnetoelectric (ME) tri-layered composite with new design strategy has been fabricated by using sol-gel synthesized Bi 3+ doped CoFe 2O 4 and Sn 4+ doped BaTiO 3 . Structural, microstructural, magnetostriction, piezoelectric and magnetoelectric properties of the synthesized materials and developed system have been thoroughly investigated. CoFe 1.9Bi 0.1O 4 have shown the improvement of magnetostriction (∼259 ppm) and strain sensitivity (∼323 ×10 −9 Oe −1) compared to those of un-doped CoFe 2O 4 (magnetostriction ∼163 ppm and strain sensitivity ∼99 ×10 −9 Oe −1). On the other hand, the piezoelectricity of BaTi 0.89Sn 0.11O 3 has improved to 424 pC/N from a value of 194 pC/N for un-doped BaTiO 3. The unique design strategy (where the output signal has been collected directly from the piezoelectric layer) and the simultaneous improvement of both the magnetostriction and piezoelectricity of the corresponding components have helped in achieving high ME coupling in the final device. The achievement of high values of in-plane ME coupling coefficients ( α ME) ( α 31) at off-resonance and zero-bias resonance conditions (α ME ∼49 and 750 mV.cm −1. Oe −1, respectively) have proven the ability of the fabricated device in various potential applications related to magnetic field sensing and magnetoelectric effect.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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