Virginia TechWang, YaojinGao, JunqiLi, MenghuiHasanyan, Davresh J.Shen, YingLi, JiefangViehland, Dwight D.Luo, Haosu2014-01-212014-01-212012-07-01Wang, Yaojin; Gao, Junqi; Li, Menghui; et al., "Ultralow equivalent magnetic noise in a magnetoelectric Metglas/Mn-doped Pb(Mg1/3Nb2/3)O-3-PbTiO3 heterostructure," Appl. Phys. Lett. 101, 022903 (2012); http://dx.doi.org/10.1063/1.47339630003-6951http://hdl.handle.net/10919/24944An ultralow equivalent magnetic noise of 6.2 pT/root Hz at 1 Hz was obtained in a bimorph heterostructure sensor unit consisting of longitudinal-magnetized Metglas layers and a transverse-poled 1 mol. % Mn-doped Pb(Mg1/3Nb2/3)O-3-29PbTiO(3) (PMN-PT) single crystal. Furthermore, the equivalent magnetic noise was <= 1 pT/root Hz at 10 Hz. Compared with previously reported multi-push-pull configuration Metglas/PMN-PT sensor units, the current heterostructure exhibits a higher magnetoelectric coefficient of 61.5 V/(cm x Oe), a similar equivalent magnetic noise at 1 Hz and a lower noise floor at several hertz range. The ultralow equivalent magnetic noise in this sensor unit is due to the low tangent loss and ultrahigh piezoelectric properties of Mn-doped PMN-PT single crystals. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733963]application/pdfen-USIn CopyrightMultiferroicsComposite materialsPhysicsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/101/2/10.1063/1.4733963https://doi.org/10.1063/1.4733963