TY - JOUR
KW - Metallic alloys
KW - Electric fields
KW - Magnetism
KW - Electric resistance
KW - Modulation
KW - Electroresistance
KW - Experimental evidence
KW - FeRh thin films
KW - Magnetic phase transitions
KW - Magnetoelectric couplings
KW - Phase instability
KW - Piezoelectric strain
KW - Colossal magnetoresistance
AU - Z.Q Liu
AU - L Li
AU - Z Gai
AU - J.D Clarkson
AU - S.L Hsu
AU - A.T Wong
AU - L.S Fan
AU - M.-W Lin
AU - C.M Rouleau
AU - T.Z Ward
AU - H.N Lee
AU - A.S Sefat
AU - H.M Christen
AU - Ramamoorthy Ramesh
AB - We report a giant, ∼22%, electroresistance modulation for a metallic alloy above room temperature. It is achieved by a small electric field of 2 kV/cm via piezoelectric strain-mediated magnetoelectric coupling and the resulting magnetic phase transition in epitaxial FeRh/BaTiO3 heterostructures. This work presents detailed experimental evidence for an isothermal magnetic phase transition driven by tetragonality modulation in FeRh thin films, which is in contrast to the large volume expansion in the conventional temperature-driven magnetic phase transition in FeRh. Moreover, all the experimental results in this work illustrate FeRh as a mixed-phase model system well similar to phase-separated colossal magnetoresistance systems with phase instability therein. © 2016 American Physical Society.
BT - Physical Review Letters
DO - 10.1103/PhysRevLett.116.097203
LA - eng
M1 - 9
N1 - cited By 46
N2 - We report a giant, ∼22%, electroresistance modulation for a metallic alloy above room temperature. It is achieved by a small electric field of 2 kV/cm via piezoelectric strain-mediated magnetoelectric coupling and the resulting magnetic phase transition in epitaxial FeRh/BaTiO3 heterostructures. This work presents detailed experimental evidence for an isothermal magnetic phase transition driven by tetragonality modulation in FeRh thin films, which is in contrast to the large volume expansion in the conventional temperature-driven magnetic phase transition in FeRh. Moreover, all the experimental results in this work illustrate FeRh as a mixed-phase model system well similar to phase-separated colossal magnetoresistance systems with phase instability therein. © 2016 American Physical Society.
PB - American Physical Society
PY - 2016
T2 - Physical Review Letters
TI - Full Electroresistance Modulation in a Mixed-Phase Metallic Alloy
VL - 116
SN - 00319007
ER -