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Nanopillars with E-field accessible multi-state (N???4) magnetization having giant magnetization changes in self-assembled BiFeO3-CoFe2O4/Pb(Mg1/3Nb2/3)-38at%PbTiO3 heterostructures.

ABSTRACT: We have deposited self-assembled BiFeO3-CoFe2O4 (BFO-CFO) thin films on (100)-oriented SrRuO3-buffered Pb(Mg1/3Nb2/3)0.62Ti0.38O3 (PMN-38PT) single crystal substrates. These heterostructures were used for the study of real-time changes in the magnetization with applied DC electric field (E DC ). With increasing E DC , a giant magnetization change was observed along the out-of-plane (easy) axis. The induced magnetization changes of the CFO nanopillars in the BFO/CFO layer were about ?M/M rDC ?=?93% at E DC ?=?-3?kv/cm. A giant converse magnetoelectric (CME) coefficient of 1.3?×?10-7?s/m was estimated from the data. By changing E DC , we found multiple(N???4) unique possible values of a stable magnetization with memory on the removal of the field.

SUBMITTER: Tang X 

PROVIDER: S-EPMC5786110 | biostudies-other | 2018 Jan

REPOSITORIES: biostudies-other

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Nanopillars with E-field accessible multi-state (N ≥ 4) magnetization having giant magnetization changes in self-assembled BiFeO<sub>3</sub>-CoFe<sub>2</sub>O<sub>4</sub>/Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)-38at%PbTiO<sub>3</sub> heterostructures.

Tang Xiao X   Viswan Ravindranath R   Gao Min M   Leung Chung Ming CM   Folger Carlos C   Luo Haosu H   Howe Brandon B   Li Jiefang J   Viehland Dwight D  

Scientific reports 20180126 1

We have deposited self-assembled BiFeO<sub>3</sub>-CoFe<sub>2</sub>O<sub>4</sub> (BFO-CFO) thin films on (100)-oriented SrRuO<sub>3</sub>-buffered Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>0.62</sub>Ti<sub>0.38</sub>O<sub>3</sub> (PMN-38PT) single crystal substrates. These heterostructures were used for the study of real-time changes in the magnetization with applied DC electric field (E <sub>DC</sub> ). With increasing E <sub>DC</sub> , a giant magnetization change was observed along the out-of-  ...[more]

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