Electrical Manipulation of Magnetic Anisotropy in aFe81Ga19/Pb(Mg1/3Nb2/3)O3-Pb(ZrxTi1−x)O3Magnetoelectric Multiferroic Composite

• DOI: 10.1103/physrevapplied.13.034015
• Publication Date: 2020-03-09T13:57:28Z
• Authors: W. Jahjah; J.-Ph. Jay; Y. Le Grand; A. Fessant; A.R.E. Prinsloo; C.J. Sheppard; D.T. Dekadjevi; D. Spenato
• Keywords: Condensed Matter - Materials Science; Materials Science (cond-mat.mtrl-sci); FOS: Physical sciences; 02 engineering and technology; [SPI.MAT] Engineering Sciences [physics]/Materials; 7. Clean energy; 01 natural sciences; [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]; [SPI.MAT]Engineering Sciences [physics]/Materials; 0103 physical sciences; [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]; [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]; 0210 nano-technology; [PHYS.COND] Physics [physics]/Condensed Matter [cond-mat]

Magnetoelectric composites are an important class of multiferroic materials that pave the way towards a new generation multifunctional devices directly integrable in data storage technology and spintronics. This study focuses on strain-mediated electrical manipulation magnetization extrinsic multiferroic. The composite includes 5 nm or 60 Fe$_{81}$Ga$_{19}$ thin films coupled to piezoelectric (011)-PMN-PZT. reversal reveals converse magnetoelectric coefficient $\alpha_\mathrm{CME,max} \approx 2.7 \times {10^{-6}}$ s.m$^{-1}$ at room temperature. reported value $\alpha_\mathrm{CME}$ is among highest so far compared previous reports single-phase multiferroics as well composites. An angular dependency also shown for first time, arising from intrinsic magnetic anisotropy FeGa. highly efficient FeGa/PMN-PZT demonstrates drastic modifications in-plane anisotropy, with almost 90$^{\circ}$ rotation preferential axis thinner under electric field E = 10.8 kV.cm$^{-1}$. Also, influence thermal strain bilayer's coercivity reference bilayer FeGa/Glass cryogenic temperatures. A different evolution observed function temperature, revealing substrate thermo-mechanical which has not yet been FeGa material.