Temperature control of local magnetic anisotropy in multiferroic CoFe/BaTiO3

Abstract

This paper reports on the temperature evolution of local elastic interactions between ferromagnetic CoFe films and ferroelectric BaTiO3 substrates. Polarization microscopy measurements indicate that growth-induced stripe domains in the CoFe films are preserved and strengthened during cooling and heating through the structural phase transitions of BaTiO3. Moreover, rotation of the magnetic easy axes at the tertragonal-to-orthorhombic transition (T = 278 K) and at T = 380 K simultaneously switches the local magnetization of both uniaxial domains by 90 degrees. Irreversible changes in the ferromagnetic domain pattern are induced when the room-temperature ferroelectric domain structure is altered after temperature cycling.

References in corpus (4)

• Giant sharp magnetoelectric switching in multiferroic epitaxial La_{0.67}Sr_{0.33}MnO_3 on BaTiO_3
• Electric-field control of magnetic domain wall motion and local magnetization reversal
• Alternating domains with uniaxial and biaxial magnetic anisotropy in epitaxial Fe films on BaTiO3
• Field Tuning of Ferromagnetic Domain Walls on Elastically Coupled Ferroelectric Domain Boundaries

Cited by in corpus (4)

• Strain-induced magnetization control in an oxide multiferroic heterostructure
• Tailoring ferromagnetism through electrically controlled morphology
• Switching on superferromagnetism
• Strain and electric field control of magnetic and electrical transport properties in a magneto-elastically coupled Fe3O4/BaTiO3(001) heterostructure