@article{33385,
  keywords = {Design, Automation, Film, Magnetic field, Iron, Room temperature, Transition temperature, Oxygen, Density functional theory, Magnetism, Electronic equipment, Electric field, Article, Priority journal, Neutron diffraction, Ferric oxide, Lutetium, Iron oxide, Magnetic property, Temperature profile, Neutron scattering},
  author = {J.A Mundy and C.M Brooks and M.E Holtz and J.A Moyer and H Das and A.F Rébola and J.T Heron and J.D Clarkson and S.M Disseler and Z Liu and A Farhan and R Held and R Hovden and E Padgett and Q Mao and H Paik and R Misra and L.F Kourkoutis and E Arenholz and A Scholl and J.A Borchers and W.D Ratcliff and Ramamoorthy Ramesh and C.J Fennie and P Schiffer and D.A Muller and D.G Schlom},
  title = {Atomically engineered ferroic layers yield a room-temperature magnetoelectric multiferroic},
  abstract = {Materials that exhibit simultaneous order in their electric and magnetic ground states hold promise for use in next-generation memory devices in which electric fields control magnetism. Such materials are exceedingly rare, however, owing to competing requirements for displacive ferroelectricity and magnetism. Despite the recent identification of several new multiferroic materials and magnetoelectric coupling mechanisms, known single-phase multiferroics remain limited by antiferromagnetic or weak ferromagnetic alignments, by a lack of coupling between the order parameters, or by having properties that emerge only well below room temperature, precluding device applications. Here we present a methodology for constructing single-phase multiferroic materials in which ferroelectricity and strong magnetic ordering are coupled near room temperature. Starting with hexagonal LuFeO 3 - the geometric ferroelectric with the greatest known planar rumpling - we introduce individual monolayers of FeO during growth to construct formula-unit-thick syntactic layers of ferrimagnetic LuFe 2 O 4 (refs 17, 18) within the LuFeO 3 matrix, that is, (LuFeO 3) m /(LuFe 2 O 4) 1 superlattices. The severe rumpling imposed by the neighbouring LuFeO 3 drives the ferrimagnetic LuFe 2 O 4 into a simultaneously ferroelectric state, while also reducing the LuFe 2 O 4 spin frustration. This increases the magnetic transition temperature substantially - from 240 kelvin for LuFe 2 O 4 (ref. 18) to 281 kelvin for (LuFeO 3) 9 /(LuFe 2 O 4) 1. Moreover, the ferroelectric order couples to the ferrimagnetism, enabling direct electric-field control of magnetism at 200 kelvin. Our results demonstrate a design methodology for creating higher-temperature magnetoelectric multiferroics by exploiting a combination of geometric frustration, lattice distortions and epitaxial engineering. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.},
  year = {2016},
  journal = {Nature},
  volume = {537},
  number = {7621},
  pages = {523-527},
  publisher = {Nature Publishing Group},
  issn = {00280836},
  doi = {10.1038/nature19343},
  note = {cited By 129},
  language = {eng},
}