Electric-field tuning of nonvolatile resistance change and magnetic properties of LaMnO3/PMN-PT(0 1 1) heterostructure

Publication date: 1 November 2019Source: Materials Letters, Volume 254Author(s): Xiao-Hua Huang, Meng Xu, Zhi-Xue Xu, Jian-Min Yan, Ren-Kui ZhengAbstractThe electric-field control of resistance change (ΔR/R) and magnetic properties has been investigated in the LaMnO3(LMO)/0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT)(0 1 1) heterostructure. When the unipolar electric field (E) increases beyond the coercive field of PMN-PT, the ΔR/R vs E curve transforms from a loop-like behavior to a butterfly-like one. The electric-field-induced non-linear strain effect in the PMN-PT substrate realizes the modulation between low and high resistance states at room temperature. Moreover, different freezing temperatures of the LMO film are observed as the PMN-PT substrate is in the fully negative (Pr-) and partially positive (Pr//) polarization states. The observation of less magnetization for Pr// state than that for Pr- state indicates that the in-plane tensile strain is beneficial to the Jahn-Teller distortion.

Source: Materials Letters - July 15, 2019 Category: Materials Science Source Type: research