375 Result(s)

Article

Formation of Metal Nitrides by Nitrogen Implantation

A systematic study was performed to investigate the ion beam induced metal nitride formation by direct nitrogen implantation into 10 selected metals, either of thin film or bulk material. An X-ray diffractomet...

En Ma, Bai-**n Liu, **n Chen, Heng-De Li in MRS Online Proceedings Library (1985)

Article

Can Amortization be Induced by Ion Mixing in Ag-Cu and Ag-Ni Systems?

The extended Structural Difference Rule for amorphous phase formation states that an amorphous phase can be obtained by ion mixing with an alloy with a composition lying in a two-phase region in the equilibriu...

B. X. Liu, L. J. Huang, J. Li, E. Ma in MRS Online Proceedings Library (1985)

Article

High Temperature Mechanical Behavior of Some Advanced Ni₃Al

High temperature mechanical properties of various Zr and Cr strengthened single phase Ni₃Al are investigated, with emphasis on the ability of each element to elevate Tp, the temperature corresponding to the peak ...

S. E. Hsu, N. N. Hsu, C. H. Tong, C. Y. Ma, S. Y. Lee in MRS Online Proceedings Library (1986)

Article

Superconducting Properties of v/cr Artificial Metallic Superlattices

We have studied the superconducting properties of V/Cr superlattices. Superlattices of V₁₀₀Cr_x, V₁₅₀Cr_x, and V₂₀₀Cr_x, with x varying between 3 and 80 atomic planes have been prepared. The films have a strong (110...

B. M. Davis, J. Q. Zheng, M. R. Ma, B. Y. **… in MRS Online Proceedings Library (1986)

Article

Interfacial Reactions of Mo with Al: Ion mixing Versus Thermal Annealing

Interfacial reactions induced by ion beam mixing and furnace annealing in Al/Mo bilayers are investigated. The amount of interfacial ion m’xing, 4Dt, follows a linear dose dependence for irradiation temperatur...

E. Ma, A. J. Brunner, T. W. Workman, C. W. Nieh… in MRS Online Proceedings Library (1987)

Article

omparisons of Silicide Formation by Rapid Thermal Annealing and Conventional Furnace Annealing

Silicide formation induced by rapid thermal annealing (RTA) and conventional furnace annealing (CFA) in bilayers of sequentially deposited films of amorphous silicon and polycrystalline Co or Ni is studied wit...

E. Ma, M. Natan, B. S. Lim, M-A. Nicolet in MRS Online Proceedings Library (1987)

Article

Ion Mixing of Near-Noble Transition Metal Films on Evaporated and Large-Grained Aluminum Substrates

Ion mixing experiments using Xe ions at temperatures ranging from 77K to about 450K were conducted on Al/Ni and Al/Pt couples. Evaporated polycrystalline Al films and large-grained Al crystals were used as sub...

E. Ma, X.-A. Zhao, M A. Nicolet in MRS Online Proceedings Library (1987)

Article

Microwave Sintering of Ceramics

Theoretical considerations regarding microwave sintering of ceramics are discussed. It is shown how the rigorous application of multiple scattering theory may permit a better understanding of this interesting ...

Vuay K. Varadan, Yushieh Ma, Akhlesh Lakhtakia… in MRS Online Proceedings Library (1988)

Article

Silicided Shallow Junction Formation Using Ion Implantation and Thermal Annealing

The combination of arsenic and boron implantation with rapid thermal annealing (RTA) has been investigated to form shallow p-n junctions under a titanium silicide (TiSi₂) metallization. The use of TiSi₂ as a conn...

Leonard M. Rubin, N. Herbots, D. Hoffman, D. Ma in MRS Online Proceedings Library (1988)

Article

Ion-Beam-Modified Interfacial Growth of Tungsten Disilicide

Preimplantation of phosphorous is used in this work to promote the lateral uniformity of the interfacial WSi₂ layer that grows upon subsequent thermal annealing of a thin W film sputter-deposited on a monocrystal...

E. Ma, N. S. Alvi, A. H. Hamdi, M A. Nicolet in MRS Online Proceedings Library (1988)

Article

Lognormal Simulation of Pore Evolution During Cement and Mortar Hardening

A model to describe the pore sizes in cement paste and mortar, as determined by high pressure mercury intrusion porosimetry, has been developed. The model describes porosity using a compound lognormal distribu...

Dexiang Shi, Wei** Ma, Paul W. Brown in MRS Online Proceedings Library (1989)

Article

Tellurium Halide Glass Fiber for Transmission in the 8–12 μm Region

Glasses in the Te-Br-Se and Te-I-Se systems show potential low losses in the 8–12 μm region. They are very stable against crystallization and against moisture. The lowest losses of a fiber at 10.6 μm, measured...

X. H. Zhang, G. Fonteneau, H. L. Ma, J. Lucas in MRS Online Proceedings Library (1989)

Article

Selective Nucleation of Single Crystal CVD Diamond and its Applicability to Semiconductor Devices

Using selective nucleation at edges or corners of μ m-size dots of Si, periodically arrayed diamond particles have been reproducibly fabricated. The particles are grown from single nuclei and have nearly-single c...

H. Kawarada, J. S. Ma, T. Yonehara, A. Hiraki in MRS Online Proceedings Library (1989)

Article

Bias Controlled Hot Filament Chemical Vapor Deposition of Diamond Thin Film on Various Substrates

The growth of diamond films on Si(001), polycrystalline Ni, Mo, Ta, and W substrates by biased controlled chemical vapor deposition is discussed. Biasing effects were examined using the Si(001) substrates. The...

Y. H. Lee, G. H. Ma, K. J. Bachmann, J. T. Glass in MRS Online Proceedings Library (1989)

Article

A Study of the Morphology of Titanium Silicide Films and the Titanium Silicide-Silicon Interface

This paper is based on a detailed study of the effect of high temperature heat treatment in a nitrogen ambient on the titanium silicide film and the silicide-silicon interface. Our investigations showed that t...

N. De Lanerolle, L. Moser, D. Hoffman, D. Ma, D. Sterner in MRS Online Proceedings Library (1989)

Article

Semiorganics: A New Class of Nlo Materials

P. R. Newman, L. F. Warren, P. Cunningham, T. Y. Chang… in MRS Online Proceedings Library (1989)

Article

Crystal Chemistry, Synthesis, and Characterization of Infrared Optical Materials

Non-oxide inorganic compounds such as sulfides, phosphides, and mixed-anion sulfidephosphides are of interest as possible infrared window materials. Our research on the solid state chemistry and structure-prop...

D. O. Kipp, C. K. Lowe-Ma, T. A. Vanderah in MRS Online Proceedings Library (1989)

Article

Integrated Processing of Silicided Shallow Junctions Using Rapid Thermal Annealing Prior to Dopant Activation

A method for producing shallow suicided diodes for MOS devices (with junction depths of about 0.1 µm), by implanting after forming the silicide layer was investigated. The key to this integrated process is the us...

Leonard Rubin, Nicole Herbots, JoAnne Gutierrez… in MRS Online Proceedings Library (1989)

Article

Use of Si-YBaCuO Intermixed System for Patterning of Superconducting Thin Films

A Si-YBaCuO intermixed system has been formed using rapid thermal annealing (RTA) of Cu/BaO/Y₂O₂/Si layered structures, which were deposited on MgO substrates by electron-beam evaporation. The electrical and stru...

Q. Y. Ma, E. S. Yang, G. V. Treyz, C. Shu… in MRS Online Proceedings Library (1989)

Article

Nonlinear Optical Properties of Structured Nanoparticle Composites

The effective nonlinear susceptibility _X( 3 ) for a composite that consists of a dilute suspension of structured nanoparticles that utilizes the surface mediated plasmon resonance can be enhanced by orders of mag...

Meyer H. Birnboim, Wei ** Ma in MRS Online Proceedings Library (1989)