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On the Vickers Indentation Fracture Toughness Test

January 4, 2007

Author(s)

George D. Quinn, Richard Bradt

The Vickers indentation fracture toughness test or VIF is addressed by considering its origins and the numerous equations that have been applied along with the technique to estimate the fracture resistance, or the KIc of ceramics. Initiation and

Chemical twinning of the pyrochlore structure structure in the system Bi2O3-Fe2O3-Nb2O5

January 1, 2007

Author(s)

Ian E. Grey, W G. Mumme, Terrell A. Vanderah, Robert S. Roth, C Bougerol

Correlations Between the Crystallographic Texture and Grain Boundary Character in Polycrystalline Materials

January 1, 2007

Author(s)

R E. Garcia, Mark D. Vaudin

A method is presented to determine the misorientation probability distribution function in polycrystalline materials based on a known, analytical or numerical, representation of the associated orientation probability distribution function, i.e., texture

Effects of Vacancies on the Properties of Disordered Ferroelectrics: A First-Principles Study

January 1, 2007

Author(s)

L Bellaiche, Jorge Iniguez, Eric J. Cockayne, Benjamin P. Burton

Near-Edge X-ray Absorption Fine Structure Spectroscopy as a Tool for Investigating Nanomaterials

January 1, 2007

Author(s)

T Hemraj-Benny, S Banerjee, S Sambasivan, Daniel A. Fischer, J A. Misewich, S S. Wong

Thickness dependence of microstructure in semiconducting films of an oligofluorene derivative

December 27, 2006

Author(s)

Dean M. DeLongchamp, M -. Ling, Yeon-Gil Jung, Daniel A. Fischer, M E. Roberts, Eric K. Lin, Zhenan Bao

Surfaces of Fluorinated Pyridinium Block-Copolymers with Enhanced Antibacterial Activity

December 19, 2006

Author(s)

Sitaraman Krishnan, R J. Ward, A Hexemer, K E. Sohn, K L. Lee, E R. Angert, Daniel A. Fischer, E J. Kramer, C K. Ober

Changes in Electronic Structure of the Electrochemically Li-Ion Deintercalated LiNiO 2 System Investigated by Soft X-Ray Absorption Spectroscopy

December 7, 2006

Author(s)

W S. Yoon, Kyung Y. Chung, James McBreen, Daniel A. Fischer, Xiao-Qing Yang

The electronic structures of Li1-xNiO2 system after electrochemically delithiated to various x values have been investigated using soft X-ray absorption spectroscopy (XAS) for oxygen K-edge and Ni LII,III-edge. By comparing the O K-edge XAS spectra of Li1

Changes in Electronic Structure of the Electrochemically Li-ion Deintercalated LiNiO2 System Investigated by Soft X-ray Absorption Spectroscopy

December 7, 2006

Author(s)

W S. Yoon, Kyung Y. Chung, James McBreen, Daniel A. Fischer, Xiao-Qing Yang

Phase Formation and Properties in the Magnetic Dielectric System Bi2O 3:2CoO 1+x::Nb2 O5

December 4, 2006

Author(s)

Terrell A. Vanderah, T Siegrist, M W. Lufaso, C Yeager, Juan C. Nino, S Yates

Effects of Local Atomic Order on the Pre-Edge Structure in the Ti K-Absorption Spectra of Perovskite Solid Solutions CaTil-xZrxO3

December 1, 2006

Author(s)

Victor L. Krayzman, Joseph C. Woicik, D Yoder, Daniel A. Fischer

First Principles Phase Diagram Calculations for the Wurtzite-Structure Systems A1N-GaN, A1N-InN and GAN-InN

December 1, 2006

Author(s)

Benjamin P. Burton, A Walle, Ursula R. Kattner

First Principles Phase Diagram Calculations for the Wurtzite-Structure Systems AlN-GaN, AlN-InN and GaN-InN

December 1, 2006

Author(s)

A Van de Walle, Benjamin P. Burton, Ursula R. Kattner

Because of their wide direct band-gaps, and excellent mechanical properties [1], wurtzite structure AlN (6.28 eV, [2]), GaN (3.5 eV, [3]) and InN (1.89 eV [4], 0.7 eV [5]) are widely used as components of light emitting diodes. Alloying, is used to tune

Phase Formation, Crystal Chemistry, and Properties in the Magnetic Dielectric System Bi2O3-Fe2O3-Nb2O5

December 1, 2006

Author(s)

M W. Lufaso, Terrell A. Vanderah, I M. Pazos, Juan C. Nino, Virgil Provenzano, Peter K. Schenck, Robert S. Roth

High Temperature Superconductor Wires and Tapes

November 26, 2006

Author(s)

M. P. Paranthaman, V Selvamanickam, K Matsumoto, Luigia Gianna, Wei-xian Zhang, P Goyal, Winnie Wong-Ng

High Temperature Superconductor Wires and Tapes was one of the MS&T2006 symposia (October 15-19, 2006; Duke Energy Center, Cincinnati, Ohio) that covered recent advances in the area of high temperature superconductor (HTS) wires and tapes. The symposium

A Universal Relation for Edge Chipping From Sharp Contacts in Brittle Materials and It's Use as a Simple Means of Toughness Evaluation

November 24, 2006

Author(s)

Herzl Chai, Brian R. Lawn

An analysis of chipping fracture in brittle solids is presented. Cracks are introduced into the edges of selected materials, including soda-lime glass and fine-grain ceramics, using a Vickers indenter in monotonic loading. The ensuing chip morphology is

The Influence of NH 3 Anneal on the Crystallization Kinetics of HfO 2 Gate Dielectric Films

November 17, 2006

Author(s)

Patrick S. Lysaght, Joseph Woicik, Brendan Foran, Joel Barnett, Gennadi Bersuker, B H. Lee

HfO2 gate dielectric thin films have been exposed to anneal processing in NH3 and N2 ambient in order to decouple the influence of N incorporation from that of the thermal cycle alone. We report on the effectiveness of NH3 processing to introduce N into

Optimization of SiGe Graded Buffer Defectivity and Throughput by Means of High Growth Temperature and Pre-Threaded Substrates

November 16, 2006

Author(s)

M Erdtmann, M T. Currie, Joseph Woicik, David R. Black

Dislocation glide kinetics dictate in relaxed graded buffers a fundamental opposition between the defectivity and throughput. For state-of-the-art Si-based applications, the trade-off between defect level and wafer cost (inversely related to throughput)

Quantitative depth profiling of photoacid generators in photoresist materials by near-edge x-ray absorption fine structure spectroscopy

November 15, 2006

Author(s)

Vivek M. Prabhu, S Sambasivan, Daniel A. Fischer, Linda K. Sundberg, Robert D. Allen

Subsolidus Phase Equilibria and Properties in the Magnetic Dielectric System Bi2O3:Mn2O3+x:Nb2O5

November 1, 2006

Author(s)

Terrell A. Vanderah, M W. Lufaso, A U. Adler, Juan C. Nino, Virgil Provenzano, Peter K. Schenck, Robert S. Roth

Role of Indenter Material and Size in Veneer Failure of Brittle Layer Structures

October 24, 2006

Author(s)

Sanjit Bhowmick, Juan J. Melendez-Martinez, Ilja Hermann, Yu Zhang, Brian R. Lawn

The roles of indenter material and size in the failure of brittle veneer layers in all-ceramic crown-like structures are studied. Glass veneer layers 1 mm thick bonded to alumina layers 0.5 mm thick on polycarbonate bases (representative of porcelain

Real Time Observation of Dendritic Solidification in Real Alloys by Synchrotron Microradiography

October 21, 2006

Author(s)

B Li, H D. Brody, David R. Black, H E. Burdette, C Rau

Effect of poly(acrylic acid) on the adhesion strength and electrochemical performance of a natural graphite negative electrode for lithium-ion batteries

October 20, 2006

Author(s)

J -. Lee, U Paik, Vincent A. Hackley, Y -. Choi

Near-Edge X-Ray Absorption Fine Structure Spectroscopy as a Tool for Investigating Nanomaterials

October 12, 2006

Author(s)

T Hemraj-Benny, S Banerjee, S Sambasivan, Daniel A. Fischer, J A. Misewich, S S. Wong

We have demonstrated near-edge X-ray absorption fine structure (NEXAFS) spectroscopy as a particularly useful and effective technique for simultaneously probing the surface chemistry, surface molecular orientation, and electronic structure of carbon

SiO2/Si3N4/Al2O3 stacks for scaled-down memory devices: Effects of interfaces and thermal annealing

October 9, 2006

Author(s)

M Lisiansky, A Heiman, M Kovler, A Fenigstein, Y Roizin, A Gladkikh, M Iksman, R Edrei, A A. Hofman, Y Shnieder, T Claasen