Showing papers in "Materials Letters in 1983"

TL;DR: In this paper, the discovery of superconductivity in a number of stoichiometric A2BC ordered ternary intermetallic alloys isostructural to the prototype ferromagnetic Heusler alloy, Cu2MnAl.

TL;DR: In this paper, a type 304 stainless steel made largely martensitic by rolling was implanted with nitrogen, nickel, and neon, and the transformation of the martensite to austenite was found by transmission election microscopy.

TL;DR: In this paper, in situ observations of a crystallization front (solid-liquid interface) during zone-melting recrystallization of thin silicon films on amorphous substrates by laser beams are described.

TL;DR: In this paper, the magnetic phase is Fe21Pr3B with a primitive tetragonal lattice and exhibits high magnetocrystalline anisotropy with a single easy axis along.

TL;DR: In this article, the thermal donors developed upon annealing Czochralski-grown silicon crystals at 450°C were investigated by means of infrared spectroscopy, and it was shown that the donors are divalent and that at least six kinds of thermal donors having similar structures are developed in the annealed crystals.

TL;DR: In this article, the construction of flat etalons containing GaAs is described, including an arrangement of GaAs and AlGaAs layers on top of a GaAs substrate which results in successful substrate removal, a procedure for etching away the substrate, and a technique for mounting the remaining sample between dielectric mirrors.

TL;DR: In this paper, thin films of Cd, Cu and Te are irradiated in air by means of a continuous, unfocused laser beam and the diameter of the oxidized zone varies empirically with time like: d = d 0 exp [ −(t − t 1 ) t 2 ], where t1 and t2 depend on the power of the laser beam.

TL;DR: In this paper, the microstructure of nitrogen-implanted Ti-6Al-4V has been investigated by transmission electron microscopy, showing that the major effects of implantation are a considerable decrease in grain size and copious precipitation of TiN with a recognizable orientation relationship to the hexagonal matrix.

TL;DR: In this paper, an optimum substrate temperature T 0 of 573 K was found for the preparation of ZnTe thin films by vacuum deposition, which was explained on the basis of the Vincett-Barlow-Roberts theory which predicts a value of nearly 0.33 for T 0 T b, where Tb is the boiling point.

TL;DR: In this article, a poly crystalline molybdenum disulphide was prepared by high-pressure reduction of M 2 trisulphides at 200°C, and a band gap of 1.18 eV was obtained and n-type conductivity found.

TL;DR: In this paper, the Si Al ratio of the starting material was of special importance in that zeolites formed with Si Al ratios similar to or smaller than that of the parent material.

TL;DR: In this article, the authors used transmission election microscopy (TEM) and Auger electron spectroscopy (AES) to study interdiffusion between fine-grained (≈150 A ) Pd films and Cu substrates.

TL;DR: In this article, high pressure reaction sinterings of TiN-TiC and MoC-MoB systems were carried out at 3.0 GPa and 1600°C for 30 min.

TL;DR: The crystal structures and lattice constants of the LaNb1−xVxO4 system have been determined at room temperature as discussed by the authors, and the system undergoes a monoclinic to tetragonal phase transformation with an increase in x analagous to the transition as a function of temperature.

TL;DR: In this article, an assessment of the stability of some organic single crystals on exposure to an intense source of synchrotron radiation during X-ray topography examination is presented.

TL;DR: In this article, a new non-destructive technique for studying the sub-surface microstructure of cleaved samples which allows correlation with the associated surface morphology is described, based on Synchrotron X-ray Fractography (SXRF).

TL;DR: In this article, thin films of AgInSe 2 are grown onto glass substrates by flash evaporation technique at temperatures ranging from 30 to 300°C and their electrical resistivity is studied.

TL;DR: The electrical conductivities of non-stoichiometric samarium manganites were measured as a function of temperature and the existence of a Z-type jump in the conductivity curve was found near 1300 K, and a heat anomaly was also observed by differential thermal analysis.

TL;DR: In this article, the pyroelectric coefficient of alanine-doped triglycine sulphate (ATGSP) crystals has been shown to be significantly higher than those of pure TGS.

TL;DR: In this article, the breakdown voltage increases and the dielectric strength decreases with increase of film thickness, and optical photomicrographs of the breakdown patterns during different stages of dc voltage are taken and the results discussed.

TL;DR: In this paper, the authors present values of the indices of refraction and absorption of several transition-metal silicides, measured using an ellipsometer with 632.8 nm light.

TL;DR: In this article, the minority carrier diffusion length in Mn-doped p-type single crystals of InP was measured using surface photovoltage technique on electrolyte/InP diodes.

TL;DR: In this paper, it was shown that the temperature at which the grey modification will convert to the white phase in dilute SnGe alloys increases with the amount of germanium, according as Tc = 32.0 + 51.8C0.33.

TL;DR: In this paper, the authors used W films as diffusion markers to study interdiffusion during the sequential formation of CuAl2, CuAl and Cu9Al4 intermetallic compounds in bimetallic Al and Cu thin films.

TL;DR: In this article, the time dependence at 550 and 700°C of M 23 C 6 precipitate composition in AISI 304 stainless steel was investigated using the X-ray fluorescence induced by electron bombardment.

TL;DR: In this article, the substitution of iron by non-magnetic trivalent cations in hexagonal ferrites was used to obtain compounds which are paramagnetic at room temperature, isomorphous with R-Fe 12 O 96, where R = Ba, Sr or Pb, and have lattice parameters close to the hexaferrite ones.

TL;DR: In this article, the authors examined the Ni(111) p(2 × 2)S system in terms of a temperature versus coverage phase diagram and determined the temperatures of these reversible structural transformations.

TL;DR: A detailed investigation of the effect of substrate growth temperature on the optical properties of AlGaAs grown by metalorganic-chemical vapor deposition is reported in this paper, using room-and low-temperature photoluminescence.

TL;DR: In this paper, the decomposition induced by the electron beam has been studied using transmission electron microscopy in sodium aluminum hydride, NaAlH4, single crystals, and results show rapid formation of small diffuse nuclei.

TL;DR: In this paper, the Czochralski method was used to grow Ba 6 Ti 2 Nb 8 O 30 (BTN) single crystals under a reducing atmosphere, and it was found that BTN decomposes into several phases at temperatures above 1330°C. No congruent melt composition was found around stoichiometric composition in an oxygen or air atmosphere.