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. 2012 Mar 30;108(13):137203.
doi: 10.1103/PhysRevLett.108.137203. Epub 2012 Mar 28.

Electric-field control of nonvolatile magnetization in Co40Fe40B20/Pb(Mg(1/3)Nb(2/3))(0.7)Ti(0.3)O3 structure at room temperature

S Zhang  1 , Y G Zhao, P S Li, J J Yang, S Rizwan, J X Zhang, J Seidel, T L Qu, Y J Yang, Z L Luo, Q He, T Zou, Q P Chen, J W Wang, L F Yang, Y Sun, Y Z Wu, X Xiao, X F Jin, J Huang, C Gao, X F Han, R Ramesh
Affiliations

Electric-field control of nonvolatile magnetization in Co40Fe40B20/Pb(Mg(1/3)Nb(2/3))(0.7)Ti(0.3)O3 structure at room temperature

S Zhang et al. Phys Rev Lett. .

Abstract

We report a large and nonvolatile bipolar-electric-field-controlled magnetization at room temperature in a Co(40)Fe(40)B(20)/Pb(Mg(1/3)Nb(2/3))(0.7)Ti(0.3)O(3) structure, which exhibits an electric-field-controlled looplike magnetization. Investigations on the ferroelectric domains and crystal structures with in situ electric fields reveal that the effect is related to the combined action of 109° ferroelastic domain switching and the absence of magnetocrystalline anisotropy in Co(40)Fe(40)B(20). This work provides a route to realize large and nonvolatile magnetoelectric coupling at room temperature and is significant for applications.

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