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Magnetoelectric macro fiber composite fabricated using low temperature transient liquid phase bonding

  • US 10,312,429 B2
  • Filed: 07/28/2016
  • Issued: 06/04/2019
  • Est. Priority Date: 07/28/2016
  • Status: Active Grant
First Claim
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1. A magnetoelectric composite material comprised of:

  • a layer of piezoelectric (PE) material;

    a layer of magnetostrictive (MS) material;

    the layer of piezoelectric material bonded to the layer of magnetostrictive material using low temperature transient liquid phase (LTTLP) bonding, forming a composite material;

    the LTTLP bond comprised of;

    titanium, gold, and a solder alloy;



    the titanium used to form an adhesion layer on the PE material and the MS material;



    the gold used to form a bonding layer on the PE material and the MS material; and



    the solder alloy used to bond the PE material and MS material together by diffusing into the bonding layers;

    the composite material divided into multiple fibers;

    a flexible circuit;

    the flexible circuit applied to the composite material;

    an epoxy spin coating applied to the combination of the flexible circuit and composite material;

    wherein the solder alloy has a melting point at or below a Curie temperature of the PE material and at or below a Curie temperature of the MS material.

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