Search Results - "Radaelli, P. G."

Non-ferroelectric nature of the conductance hysteresis in CH3NH3PbI3 perovskite-based photovoltaic devices by Beilsten-Edmands, J., Eperon, G. E., Johnson, R. D., Snaith, H. J., Radaelli, P. G.

“…We present measurements of conductance hysteresis on CH3NH3PbI3 perovskite thin films, performed using the double-wave method, in order to investigate the…”
Get full text

Controlling spin current polarization through non-collinear antiferromagnetism by Nan, T., Quintela, C. X., Irwin, J., Gurung, G., Shao, D. F., Gibbons, J., Campbell, N., Song, K., Choi, S. -Y., Guo, L., Johnson, R. D., Manuel, P., Chopdekar, R. V., Hallsteinsen, I., Tybell, T., Ryan, P. J., Kim, J. -W., Choi, Y., Radaelli, P. G., Ralph, D. C., Tsymbal, E. Y., Rzchowski, M. S., Eom, C. B.

“…The interconversion of charge and spin currents via spin-Hall effect is essential for spintronics. Energy-efficient and deterministic switching of…”
Get full text

Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures by Saenrang, W., Davidson, B. A., Maccherozzi, F., Podkaminer, J. P., Irwin, J., Johnson, R. D., Freeland, J. W., Íñiguez, J., Schad, J. L., Reierson, K., Frederick, J. C., Vaz, C. A. F., Howald, L., Kim, T. H., Ryu, S., Veenendaal, M. v., Radaelli, P. G., Dhesi, S. S., Rzchowski, M. S., Eom, C. B.

“…Exploiting multiferroic BiFeO 3 thin films in spintronic devices requires deterministic and robust control of both internal magnetoelectric coupling in BiFeO 3…”
Get full text

Modulated spin helicity stabilized by incommensurate orbital density waves in a quadruple perovskite manganite by Johnson, R.D., Khalyavin, D.D., Manuel, P., Bombardi, A., Martin, Christine, Chapon, L.C., Radaelli, P.G.

“…Through a combination of neutron diffraction and Landau theory we describe the spin ordering in the ground state of the quadruple perovskite manganite CaMn7O12…”
Get full text

Spin structure and magnetic frustration in multiferroic RMn2O5 (R=Tb,Ho,Dy) by BLAKE, G. R, CHAPON, L. C, RADAELLI, P. G, PARK, S, HUR, N, CHEONG, S.-W, RODRIGUEZ-CARVAJAL, J

Get full text

Structural anomalies and multiferroic behavior in magnetically frustrated TbMn2O5 by CHAPON, L. C, BLAKE, G. R, GUTMANN, M. J, PARK, S, HUR, N, RADAELLI, P. G, CHEONG, S.-W

“…We have studied the magnetostructural phase diagram of multiferroic TbMn2O5 as a function of temperature and magnetic field by neutron diffraction. Dielectric…”
Get full text

Structural transformation induced by magnetic field and "colossal-like" magnetoresistance response above 313 K in MnAs by Mira, J, Rivadulla, F, Rivas, J, Fondado, A, Guidi, T, Caciuffo, R, Carsughi, F, Radaelli, P G, Goodenough, J B

“…MnAs exhibits a first-order phase transition from a ferromagnetic, high-spin metal hexagonal phase to a paramagnetic, lower-spin insulator orthorhombic phase…”
Get full text

Structural and magnetic properties of the kagomé antiferromagnet YbBaCo4O7 by HUQ, A, MITCHELL, J. F, ZHENG, H, CHAPON, L. C, RADAELLI, P. G, KNIGHT, K. S, STEPHENS, P. W

“…The mixed-valent compound YbBaCo{sub 4}O{sub 7} is built up of Kagom{acute e} sheets of CoO{sub 4} tetrahedra, linked in the third dimension by a triangular…”
Get full text

Observation of magnetic vortex pairs at room temperature in a planar α-Fe2O3/Co heterostructure by Chmiel, F. P., Waterfield Price, N., Johnson, R. D., Lamirand, A. D., Schad, J., van der Laan, G., Harris, D. T., Irwin, J., Rzchowski, M. S., Eom, C.-B., Radaelli, P. G.

“…Vortices, occurring whenever a flow field ‘whirls’ around a one-dimensional core, are among the simplest topological structures, ubiquitous to many branches of…”
Get full text

Giant improper ferroelectricity in the ferroaxial magnet CaMn7O12 by Johnson, R D, Chapon, L C, Khalyavin, D D, Manuel, P, Radaelli, P G, Martin, C

“…In rhombohedral CaMn7O12, an improper ferroelectric polarization of magnitude 2870  μC  m(-2) is induced by an incommensurate helical magnetic structure that…”
Get full text

Spin waves and revised crystal structure of honeycomb iridate Na2IrO3 by Choi, S K, Coldea, R, Kolmogorov, A N, Lancaster, T, Mazin, I I, Blundell, S J, Radaelli, P G, Singh, Yogesh, Gegenwart, P, Choi, K R, Cheong, S-W, Baker, P J, Stock, C, Taylor, J

“…We report inelastic neutron scattering measurements on Na2IrO3, a candidate for the Kitaev spin model on the honeycomb lattice. We observe spin-wave…”
Get full text

Comment on "Spin-canting-induced improper ferroelectricity and spontaneous magnetization reversal in SmFeO3" by Johnson, R D, Terada, N, Radaelli, P G

Get full text

Giant tunability of ferroelectric polarization in GdMn2O5 by Lee, N, Vecchini, C, Choi, Y J, Chapon, L C, Bombardi, A, Radaelli, P G, Cheong, S-W

“…Giant tunability of ferroelectric polarization (ΔP=5000  μC/m2) in the multiferroic GdMn2O5 with external magnetic fields is discovered. The detailed magnetic…”
Get full text

Cu3Nb2O8: a multiferroic with chiral coupling to the crystal structure by Johnson, R D, Nair, Sunil, Chapon, L C, Bombardi, A, Vecchini, C, Prabhakaran, D, Boothroyd, A T, Radaelli, P G

“…By combining bulk properties, neutron diffraction, and nonresonant x-ray diffraction measurements, we demonstrate that the new multiferroic Cu(3)Nb(2)O(8)…”
Get full text

Crossover from Large to Small Polarons across the Metal-Insulator Transition in Manganites by Lanzara, A., Saini, N. L., Brunelli, M., Natali, F., Bianconi, A., Radaelli, P. G., Cheong, S.-W.

Get full text

Ferroelectricity induced by acentric spin-density waves in YMn2O5 by Chapon, L C, Radaelli, P G, Blake, G R, Park, S, Cheong, S-W

“…The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be…”
Get full text

Magnetic correlations in the extended kagome YBaCo4O7 probed by single-crystal neutron scattering by Manuel, P, Chapon, L C, Radaelli, P G, Zheng, H, Mitchell, J F

“…We have studied the frustrated system YBaCo4O7.0 generally described as an alternating stacking of kagome and triangular layers of magnetic ions on a trigonal…”
Get full text

X-ray imaging and multiferroic coupling of cycloidal magnetic domains in ferroelectric monodomain BiFeO3 by Johnson, R D, Barone, P, Bombardi, A, Bean, R J, Picozzi, S, Radaelli, P G, Oh, Y S, Cheong, S-W, Chapon, L C

“…Magnetic domains at the surface of a ferroelectric monodomain BiFeO(3) single crystal have been imaged by hard x-ray magnetic scattering. Magnetic domains up…”
Get full text

Phase imaging using time-of-flight neutron diffraction by Gutmann, M. J., Kockelmann, W., Chapon, L. C., Radaelli, P. G.

“…A technique that allows the spatial distribution of crystallographic phases in the interior of an object to be reconstructed from neutron time‐of‐flight (TOF)…”
Get full text

Evolution of Magneto-Orbital order Upon B-Site Electron Doping in Na1−xCaxMn7O12 Quadruple Perovskite Manganites by Johnson, R D, Mezzadri, F, Manuel, P, Khalyavin, D D, Gilioli, E, Radaelli, P G

“…We present the discovery and refinement by neutron powder diffraction of a new magnetic phase in the Na1−xCaxMn7O12 quadruple perovskite phase diagram, which…”
Get full text