Microwave tunability in a GaAs-based multiferroic heterostructure: Co2 MnAl/GaAs/PMN-PT

  • Y. Chen
  • , J. Gao
  • , J. Lou
  • , M. Liu
  • , S. D. Yoon
  • , A. L. Geiler
  • , M. Nedoroscik
  • , D. Heiman
  • , N. X. Sun
  • , C. Vittoria
  • , V. G. Harris

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

A strong magnetoelectric (ME) interaction is presented in a magnetostrictive-semiconductor-piezoelectric heterostructure that consists of the Huesler alloy, Co2 MnAl, GaAs, and lead magnesium niobate-lead titanate (PMN-PT). The laminated Co2 MnAl/GaAs/PMN-PT structure, having a thickness of 19 nm/180 μm/500 μm, demonstrates a ferromagnetic resonance (FMR) field shift of 28 Oe with an external electric field of 200 V across the PMN-PT substrate. This corresponds to a resonance frequency shift of ∼125 MHz at X -band. It yields a large ME coupling (7 Oe cm/kV) and microwave tunability (∼32 MHz/kV cm-1), compared to other trilayer multiferroic composite structures. In addition, static magnetization measurement indicates a reduction in the remanence magnetization while applying the electric field, which corroborates the ME interactions mediated by the translation of magnetoelastic forces in this structure. This work explores the potential of multiferroic heterostrucuture transducers for use in FMR microwave devices tuned by electric fields.

Original languageEnglish
Article number07A510
JournalJournal of Applied Physics
Volume105
Issue number7
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

Dive into the research topics of 'Microwave tunability in a GaAs-based multiferroic heterostructure: Co2 MnAl/GaAs/PMN-PT'. Together they form a unique fingerprint.

Cite this