Optimizing direct magnetoelectric coupling in Pb(Zr,Ti)O3/Ni multiferroic film heterostructures

Ming Feng, Jianjun Wang, Jiamian Hu, Jing Wang, Jing Ma, Hai Bo Li, Yang Shen, Yuan Hua Lin, Long-qing Chen, Ce Wen Nan

Research output: Contribution to journalArticle

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Abstract

Polycrystalline Pt thin films of different thicknesses (0-75 nm) were introduced using magnetron sputtering in Pb(Zr0.52Ti0.48)O3 (PZT, 400 nm in thickness)/Pt/Ni multiferroic film heterostructures, aimed at optimizing the transfer efficiency of magnetostrictive strain from the bottom Ni foil to the top PZT film and thus the direct magnetoelectric (ME) coupling. The ME voltage coefficient αE31 was directly measured, while the strain transfer efficiency k was obtained by combined experimental and theoretical analysis. At the optimum Pt-thickness of 30 nm, the polycrystalline film heterostructure shows the largest αE31 of 772 mV cm-1 Oe-1 at a low dc magnetic bias field of 86 Oe, as well as the highest k of 83% that is comparable to that in epitaxial quasi-2-2 film heterostructures.

Original languageEnglish (US)
Article number072901
JournalApplied Physics Letters
Volume106
Issue number7
DOIs
StatePublished - Feb 16 2015

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foils
magnetron sputtering
electric potential
coefficients
thin films

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Feng, Ming ; Wang, Jianjun ; Hu, Jiamian ; Wang, Jing ; Ma, Jing ; Li, Hai Bo ; Shen, Yang ; Lin, Yuan Hua ; Chen, Long-qing ; Nan, Ce Wen. / Optimizing direct magnetoelectric coupling in Pb(Zr,Ti)O3/Ni multiferroic film heterostructures. In: Applied Physics Letters. 2015 ; Vol. 106, No. 7.
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Optimizing direct magnetoelectric coupling in Pb(Zr,Ti)O3/Ni multiferroic film heterostructures. / Feng, Ming; Wang, Jianjun; Hu, Jiamian; Wang, Jing; Ma, Jing; Li, Hai Bo; Shen, Yang; Lin, Yuan Hua; Chen, Long-qing; Nan, Ce Wen.

In: Applied Physics Letters, Vol. 106, No. 7, 072901, 16.02.2015.

Research output: Contribution to journalArticle

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T1 - Optimizing direct magnetoelectric coupling in Pb(Zr,Ti)O3/Ni multiferroic film heterostructures

AU - Feng, Ming

AU - Wang, Jianjun

AU - Hu, Jiamian

AU - Wang, Jing

AU - Ma, Jing

AU - Li, Hai Bo

AU - Shen, Yang

AU - Lin, Yuan Hua

AU - Chen, Long-qing

AU - Nan, Ce Wen

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AB - Polycrystalline Pt thin films of different thicknesses (0-75 nm) were introduced using magnetron sputtering in Pb(Zr0.52Ti0.48)O3 (PZT, 400 nm in thickness)/Pt/Ni multiferroic film heterostructures, aimed at optimizing the transfer efficiency of magnetostrictive strain from the bottom Ni foil to the top PZT film and thus the direct magnetoelectric (ME) coupling. The ME voltage coefficient αE31 was directly measured, while the strain transfer efficiency k was obtained by combined experimental and theoretical analysis. At the optimum Pt-thickness of 30 nm, the polycrystalline film heterostructure shows the largest αE31 of 772 mV cm-1 Oe-1 at a low dc magnetic bias field of 86 Oe, as well as the highest k of 83% that is comparable to that in epitaxial quasi-2-2 film heterostructures.

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