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Search Publications by: Winnie Wong-Ng (Fed)

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Displaying 176 - 200 of 274

Texture and Phase Analysis of a Ca 3 Co 4 O 9 / Si (100) Thermoelectric Film

July 26, 2007
Author(s)
Winnie K. Wong-Ng, Y F. Hu, Mark D. Vaudin, B He, Makoto Otani, Nathan Lowhorn, Q Li
This paper reports the texture analysis as well as the identification of two crystalline phases between a thin film of monoclinic Ca3Co4O9 and a cubic (100) Si substrate, using a diffractometer equipped with a 2-dimensional area detector. No reflections

The 2006 Materials Research Society (MRS) Fall Meeting Report

April 26, 2007
Author(s)
Winnie K. Wong-Ng
The 2006 Materials Research Society (MRS) Fall Meeting took place in the Hynes Convention Center and the Sheraton Boston Hotel, starting the weekend following the Thanksgiving Holidays from November 26 to December 1. This large-scale meeting included forty

Synthesis and Single-Crystal X-Ray Diffraction Studies of New Framework Substituted Type II Clathrates, Cs 8 Na 16 Ag x Ge 136-x (x < 7)

April 13, 2007
Author(s)
Matthew Beekman, Winnie Wong-Ng, James A. Kaduk, Alexander J. Shapiro, George S. Nolas
New inorganic type II clathrates with Ag atoms substituting for framework Ge atoms, Cs8Na16AgxGe136-x (x = 0, 5.9, and 6.7), have been synthesized by reaction of the pure elements at high temperature. Structural refinements have been performed using single

Phase Relations in the Ba-Y-Cu-O Films on SrTiO3 for the -Ex Situ BaF2- Process

March 5, 2007
Author(s)
Winnie K. Wong-Ng, Makoto Otani, Lawrence P. Cook, Mark D. Vaudin, James P. Cline, Ron Feenstra, T G. Holesinger
In situ x-ray diffraction was used to establish the phase relations in high-Tc superconductor Ba–Y– Cu–O films grown on SrTiO3 through the ex situ BaF2 process. These relations differ from bulk equilibrium phase assemblages in the BaO–Y2O3–CuOx system. In

A High-Throughput Thermoelectric Power-Factor Screening Tool for Rapid Construction of Thermoelectric Property Diagrams

January 23, 2007
Author(s)
Makoto Otani, Nathan Lowhorn, Peter K. Schenck, Winnie K. Wong-Ng, Martin L. Green, K Itaka, H Koinuma
We have developed a high throughput screening tool that maps out thermoelectric power factors of combinatorial composition-spread film libraries. The screening tool allows us to measure the electrical conductivity and Seebeck coefficient of over 1000

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

The 2005 Materials Research Society (MRS) Fall Meeting

September 18, 2006
Author(s)
Winnie K. Wong-Ng
The 2005 Materials Research Society (MRS) Fall Meeting took place in the Hynes Convention Center and the Sheration Boston Hotel, starting the weekend following the Thanksgivings Holidays from November 27 to December 2. This large-scale meeting included

X-Ray and Neutron Powder Diffraction Studies of (Ba 1-x Sr x )Y 2 CuO 5

May 18, 2006
Author(s)
Zhi Yang, Winnie K. Wong-Ng, James A. Kaduk, Qingzhen Huang, Lawrence P. Cook
This paper reports the results of the crystallography and crystal chemistry investigation of the (Ba1-xSrx)Y2 CuO5 ( green phase ) solid solution series by x-ray powder diffraction (XPD) and neutron powder diffraction (NPD) methods. The single phase region