385 citations · 789 across the 7 of their papers we have counts for
7 papers
Unit cell orientation of tetragonal-like BiFeO thin films grown on highly miscut LaAlO substrates
C. Beekman, W. Siemons, T. Z. Ward +7
Synchrotron and lab-scale x-ray diffraction shows that tetragonal-like T'-BiFeO3 films on miscut LaAlO3 substrates (miscut < 5 deg) exhibit (00l)-planes tilted away from those of t…
Antiferromagnetic transitions in `T-like' BiFeO3
G. J. MacDougall, H. M. Christen, W. Siemons +5
Recent studies have reported the existence of an epitaxially-stabilized tetragonal-like ('T-like') monoclinic phase in BiFeO3 thin-films with high levels of compressive strain. Whi…
Misfit Strain Accommodation in Epitaxial ABO3 Perovskites: Lattice Rotations and Lattice Modulations
A. Vailionis, H. Boschker, W. Siemons +4
We present a study of the lattice response to the compressive and tensile biaxial stress in La0.67Sr0.33MnO3 (LSMO) and SrRuO3 (SRO) thin films grown on a variety of single crystal…
Determination of the spin-flip time in ferromagnetic SrRuO3 from time-resolved Kerr measurements
C. L. S. Kantner, M. C. Langner, W. Siemons +5
We report time-resolved Kerr effect measurements of magnetization dynamics in ferromagnetic SrRuO3. We observe that the demagnetization time slows substantially at temperatures wit…
Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO
Jing Xia, W. Siemons, G. Koster +2
Ultrathin films of the itinerant ferromagnet SrRuO were studied using transport and magnto-optic polar Kerr effect. We find that below 4 monolayers the films become insulating…
Understanding the nature of electronic effective mass in double-doped SrTiO
J. Ravichandran, W. Siemons, M. L. Scullin +5
We present an approach to tune the effective mass in an oxide semiconductor by a double doping mechanism. We demonstrate this in a model oxide system SrLaTiO, w…