NCNR Magnetic Nanostructures Publications
RECENT NCNR NANOMAGNETISM PUBLICATIONS
Magnetic Domain Formation Within Pseudo-Spin Valve Nanopillars
K. L. Krycka, J. A. Borchers, F. J. Castano, B. B. Maranville, and C. A. Ross,
Submitted to Journal of Applied Physics.
Direct Observation of Magnetic Gradient in Co/Pd Pressure-Graded Media
B. J. Kirby, S. M. Watson, J. E. Davies, Kai Liu, R. D. Shull, and J. A. Borchers,
Submitted to Journal of Applied Physics.
Resolving 3D Magnetism in Nanoparticles Using Polarization Analyzed SANS
K. L. Krycka, R. Booth, J. A. Borchers, W. C. Chen, C. Conlon, T. Gentile, C. Hogg,
Y. Ijiri, M. Laver, B. B. Maranville, S. A. Majetich, J. J. Rhyne and S. M. Watson,
Submitted to Physica B.
Anomalous Ferromagnetism in TbMnO3 Thin Films
B. J. Kirby, D. Kan, A. Luykx, M. Murakami, D. Kundaliya, and I. Takeuchi,
Accepted to Journal of Applied Physics.
Effect of Structural Roughness on Domain Wall Formation in
Spin Valves Using Off-specular Reflectivity Techniques
Jun Park, S.M. Watson, C.M. Furjanic, D.K. Draganova, C.Y. Chen,
J.A. Borchers, M.J. Carey, P.D. Sparks and J.C. Eckert,
Accepted to IEEE Transactions on Magnetics.
Carrier-Mediated Antiferromagnetic Interlayer Exchange Coupling in
Diluted Magnetic Semiconductor Multilayers Ga[1-x]Mn[x]As / GaAs:Be
J. -H Chung, S. J. Chung, Sanghoon Lee, B. J. Kirby,
J. A. Borchers, Y. J. Cho, X. Liu, and J. K. Furdyna,
Physical Review Letters 101, 237202 (2008).
Manipulating the Magnetic Structure of Co Core/CoO Shell Nanoparticles:
Implications for Controlling the Exchange Bias
S. E. Inderhees, J. A. Borchers, K. S. Green, M. S. Kim,
K. Sun, G. L. Strycker, and M. C. Aronson,
Physical Review Letters. 101,117202 (2008).
Ferromagnetism in CuO-ZnO multilayers
C. Sudakar, K. Padmanabhan, R. Naik, G. Lawes, B. J. Kirby, Sanjiv Kumar, and V. M. Naik,
Applied Physics Letters 93, 042502 (2008).
Interfacial Magnetic Domain Wall Formation in Perpendicular-Anisotropy,
Exchange-Spring Films
S.M. Watson, T. Hauet, J.A. Borchers, S. Mangin and E.E. Fullerton,
Applied Physics Letters 92, 202507 (2008).
Thickness of the Pinned Layer as a Controlling Factor in Domain
Wall Formation During Training in IrMn-based Spin Valves
J. Park, C. Furjanic, S. Eisenberg, D. Diaganova, J.A. Borchers, S.M. Watson,
D.J. Tighe, P.A. Kienzle, M.J. Carey, P.D. Sparks and J.C. Eckert,
Journal of Applied Physics 103, 07C111 (2008).
Dependence of TMR on electrode material in EuO-based tunnel junctions
investigated using polarized neutron reflectivity
S.M. Watson, T.S. Santos, J.A. Borchers, and J.S. Moodera,
Journal of Applied Physics 103, 07A719 (2008).
Field Evolution of Magnetic Correlation Lengths in e-Co Nanoparticle Assemblies
M. Sachan, C. Bonnoit, S. A. Majetich, Y. Ijiri, P. O. Mensah-Bonsu,
J. A. Borchers and J. J. Rhyne,
Applied Physics Letters 92, 152503 (2008).
The Influence of Magnetic and Physiological Behaviour on the
Effectiveness of Iron Oxide Nanoparticles for Hyperthermia
C. L. Dennis, A. J. Jackson, J. A. Borchers, R. Ivkov, A. R. Foreman, P. J. Hoopes,
R. Strawbridge, Z. Pierce, E. Goerntiz, J. W. Lau and C. Gruettner,
Journal of Physics D - Applied Physics 41, 134020 (2008).
Magnetization Reversal of Ga1-xMnxAs Layers Separated by a Non-Magnetic Spacer
B.J. Kirby, J.A. Borchers, X. Liu, Z. Ge, Y.J. Cho, M. Dobrowolska, and J.K. Furdyna,
Journal of Applied Physics 103, 07D116 (2008).
Nanoscale Magnetic Structure of Ferromangetic/Antiferromagnetic Manganite Multilayers
D. Niebieskikwiat, L.E. Hueso, J.A. Borchers, N. D. Mathur and M.B. Salamon,
Physical Review Letters 99, 247207 (2007).
Suppression of Nuclear Polarization near the Surface of Optically Pumped GaAs
M.R. Fitzsimmons, B.J. Kirby, N.W. Hengartner, F. Trouw, M.J. Erickson,
S.D. Flexner, T. Kondo, C. Adelmann, C.J. Palmstrom, P.A. Crowell,
W. Chen, T.R. Gentile, J.A. Borchers, C.F. Majkrzak, and R. Pynn,
Physical Review B 76, 245301 (2007).
Definitive Evidence of Interlayer Coupling Between
Ga1-xMnxAs Layers Separated by a Non-Magnetic Spacer
B.J. Kirby, J.A. Borchers, X. Liu, Z. Ge, Y.J. Cho, M. Dobrowolska, and J.K. Furdyna,
Physical Review B 76, 205316 (2007).
Tuning Exchange-bias Properties by Thermal Effects in a Hard/Soft Bilayer
T. Hauet, S. Mangin, F. Montaigne, J.A. Borchers, and Y. Henry,
Applied Physics Letters 91, 022505 (2007).
A recent example of exciting research performed in collaboration with our group at the NCNR: Superlattices comprised of ferromagnetic La2/3Sr1/3MnO3 (LSMO) and nominally antiferromagnetic Pr2/3Ca1/3MnO3 (PCMO) with differing PCMO layer thicknesses were studied using the NG1 Polarized Beam Reflectometer. The PCMO layers were found to have a net magnetization that is maximized when the PCMO layer thickness closely matches the size of ferromagnetic clusters known to form in PCMO. These results imply the possibility of tuning phase separation through geometric constraints.
From Niebieskikwiat et al, Phys. Rev. Lett. 99, 247207 (2007).
Top: Neutron reflectivity for the samples with tA = 2.7 nm (at 300 K, left) and tA = 4.3 nm (at 6 K, right). Triangles and circles correspond to R-- and R++, respectively. The solid lines through the data are the fits. Bottom: M profiles at the three studied temperatures for the same samples (tA = 2.7 and 4.3 nm on the left and right sides, respectively). The light and dark gray areas are the LSMO and PCMO layers, respectively.
