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Instruments / Technical Area	Publication Details	Published	Actions
I06-Nanoscience	Perpendicular local magnetization under voltage control in Ni films on ferroelectric BaTiO3 substrates Massimo Ghidini , Francesco Maccherozzi , Xavier Moya , Lee C. Phillips , Wenjing Yan , Jordane Soussi , Nicolas Métallier , Mary E. Vickers , Nina-J. Steinke , Rhodri Mansell , Crispin Barnes , Sarnjeet S. Dhesi , Neil D. Mathur Advanced Materials DOI: 10.1002/adma.201404799 PMID: 25640672 Diamond Proposal Number(s): [8325] Open Access Show Abstract ▼ Abstract: High-resolution magnetoelectric imaging is used to demonstrate electrical control of the perpendicular local magnetization associated with 125 nm-wide magnetic stripe domains in 100-nm-thick Ni films. This magnetoelectric coupling is achieved in zero magnetic field using strain from ferroelectric BaTiO3 substrates to control perpendicular anisotropy imposed by the growth stress. These findings may be exploited for perpendicular recording in nanopatterned hybrid media.	Jan 2015
I06-Nanoscience	Tuning La0.67Sr0.33MnO3 surface magnetism using LaMnO3 and SrTiO3 caps L. C. Phillips , F. Maccherozzi , X. Moya , M. Ghidini , W. Yan , J. Soussi , S. S. Dhesi , N. D. Mathur Journal Of Magnetism And Magnetic Materials DOI: 10.1016/j.jmmm.2013.10.024 Diamond Proposal Number(s): [6857, 1773] Show Abstract ▼ Abstract: We have investigated how the surface magnetism of epitaxial La0.67Sr0.33MnO3 films on NdGaO3 substrates is modified by 2 nm-thick caps of the undoped manganite LaMnO3 and the band insulator SrTiO3. Low-temperature photoemission electron microscopy images with x-ray magnetic circular dichroism contrast reveal large ferromagnetic domains, and a reduction of surface Curie temperature by 40 K (LaMnO3 cap) and 70 K (SrTiO3 cap). We use these negative results to argue that capped films of sub-optimally doped La1−xSrxMnO3 (x≠0.33) should improve the operating temperature of all-oxide and other spintronic devices.	Oct 2013

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