Showing 2009 · cond-mat.mtrl-sciShow all

9 papers · 2 filters

cond-mat.mtrl-sci2009★ 25 cited

Phase Diagrams and Domain Splitting in Thin Ferroelectric Films with Incommensurate Phases

A. N. Morozovska, E. A. Eliseev, JianJun Wang +4

We studied the phase diagram of thin ferroelectric films with incommensurate phases and semiconductor properties within the framework of Landau-Ginzburg-Devonshire theory. We perfo…

cond-mat.mtrl-sci2009★ 175 cited

The Deposition of High-Quality HfO2 on Graphene and the Effect of Remote Oxide Phonon Scattering

Ke Zou, Xia Hong, Derek Keefer +1

We demonstrate the atomic layer deposition of high-quality HfO2 film on graphene and report the magnitude of remote oxide phonon (ROP) scattering in dual-oxide graphene transistors…

cond-mat.mtrl-sci2009★ 33 cited

Epitaxial Graphene Growth on SiC Wafers

D. Kurt Gaskill, Glenn G. Jernigan, Paul M. Campbell +17

An in vacuo thermal desorption process has been accomplished to form epitaxial graphene (EG) on 4H- and 6H-SiC substrates using a commercial chemical vapor deposition reactor. Corr…

cond-mat.mtrl-sci2009★ 5 cited

Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO3-type Phase of FeTiO3

T. Varga, A. Kumar, E. Vlahos +11

We report the magnetic and electrical characteristics of a polycrystalline specimen of FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezore…

cond-mat.mtrl-sci2009★ 41 cited

To wet or not to wet: that is the question

Silvina M. Gatica, Milton W. Cole

Wetting transitions have been predicted and observed to occur for various combinations of fluids and surfaces. This paper describes the origin of such transitions, for liquid films…

cond-mat.mtrl-sci2009★ 20 cited

Interlayer and interfacial exchange coupling in ferromagnetic metal/semiconductor heterostructures

M. J. Wilson, M. Zhu, R. C. Myers +3

We describe a systematic study of the exchange coupling between a magnetically hard metallic ferromagnet (MnAs) and a magnetically soft ferromagnetic semiconductor (GaMnAs) in bila…

cond-mat.mtrl-sci2009★ 51 cited

Thermodynamic Fluctuations in Magnetic Phase Transition: Invar as a Prototype

Y. Wang, S. L. Shang, H. Zhang +2

We propose a first-principles formulism for system with spin fluctuations and apply it to the ordered Fe3Pt to uncover the Invar anomalies, including negative thermal expansion and…

cond-mat.mtrl-sci2009★ 199 cited

Correlating Raman Spectral Signatures with Carrier Mobility in Epitaxial Graphene: A Guide to Achieving High Mobility on the Wafer Scale

Joshua A. Robinson, Maxwell Wetherington, Joseph L. Tedesco +11

We report a direct correlation between carrier mobility and Raman topography of epitaxial graphene (EG) grown on silicon carbide (SiC). We show the Hall mobility of material on the…

cond-mat.mtrl-sci2009★ 28 cited

Broadband Dielectric Spectroscopy of Ruddlesden-Popper SrTiO ( = 1, 2, 3) Thin Films

N. D. Orloff, W. Tian, C. J. Fennie +8

We explore the frequency-dependent relative permittivity of Ruddlesden-Popper series Sr(n+1)Ti(n)O(3n+1) (n =1,2,3) thin films as a function of temperature and dc electric field. I…