Anomalous heat capacities in submonolayer solid 3He films commensurate to graphite substrate

2005 ◽  
Vol 66 (8-9) ◽  
pp. 1425-1428
Author(s):  
Masashi Morishita
Keyword(s):  
Heat Capacities ◽  
Graphite Substrate ◽  
Anomalous Heat ◽  
Solid 3He

Anomalous Heat Capacities of Supercooled Water and Heavy Water

Science ◽  
1973 ◽  
Vol 181 (4097) ◽  
pp. 342-344 ◽  
Author(s):  
C. A. Angell ◽  
J. C. Tucker
Keyword(s):  
Heavy Water ◽  
Supercooled Water ◽  
Heat Capacities ◽  
Anomalous Heat

Anomalous heat capacities of niobium and tantalum below 1 K

1974 ◽  
Vol 10 (7) ◽  
pp. 2771-2776 ◽  
Author(s):  
G. J. Sellers ◽  
A. C. Anderson ◽  
H. K. Birnbaum
Keyword(s):  
Heat Capacities ◽  
Anomalous Heat

Thin Pyrolytic Graphite Films for Electron Microscope Substrates

1971 ◽  
Vol 29 ◽  
pp. 226-227 ◽  
Author(s):  
George H. N. Riddle ◽  
Benjamin M. Siegel
Keyword(s):  
Vacuum Chamber ◽  
Pyrolytic Graphite ◽  
High Vacuum ◽  
Dark Field ◽  
Ultra High Vacuum ◽  
Graphite Substrate ◽  
Nickel Substrate ◽  
Routine Procedure ◽  
Field Electron Microscopy ◽  
Dark Field Electron

A routine procedure for growing very thin graphite substrate films has been developed. The films are grown pyrolytically in an ultra-high vacuum chamber by exposing (111) epitaxial nickel films to carbon monoxide gas. The nickel serves as a catalyst for the disproportionation of CO through the reaction 2C0 → C + CO2. The nickel catalyst is prepared by evaporation onto artificial mica at 400°C and annealing for 1/2 hour at 600°C in vacuum. Exposure of the annealed nickel to 1 torr CO for 3 hours at 500°C results in the growth of very thin continuous graphite films. The graphite is stripped from its nickel substrate in acid and mounted on holey formvar support films for use as specimen substrates.The graphite films, self-supporting over formvar holes up to five microns in diameter, have been studied by bright and dark field electron microscopy, by electron diffraction, and have been shadowed to reveal their topography and thickness. The films consist of individual crystallites typically a micron across with their basal planes parallel to the surface but oriented in different, apparently random directions about the normal to the basal plane.

Determination of creep mechanisms in various silicon carbides via TEM

1986 ◽  
Vol 44 ◽  
pp. 484-487
Author(s):  
C. H. Carter ◽  
J. E. Lane ◽  
J. Bentley ◽  
R. F. Davis
Keyword(s):  
Heat Exchangers ◽  
Sintered Material ◽  
Polycrystalline Material ◽  
Chemical Vapor ◽  
Graphite Substrate ◽  
Second Phase ◽  
Reaction Bonding ◽  
Creep Mechanisms ◽  
Porous Sic

Silicon carbide (SiC) is the generic name for a material which is produced and fabricated by a number of processing routes. One of the three SiC materials investigated at NCSU is Norton Company's NC-430, which is produced by reaction-bonding of Si vapor with a porous SiC host which also contains free C. The Si combines with the free C to form additional SiC and a second phase of free Si. Chemical vapor deposition (CVD) of CH3SiCI3 onto a graphite substrate was employed to produce the second SiC investigated. This process yielded a theoretically dense polycrystalline material with highly oriented grains. The third SiC was a pressureless sintered material (SOHIO Hexoloy) which contains B and excess C as sintering additives. These materials are candidates for applications such as components for gas turbine, adiabatic diesel and sterling engines, recouperators and heat exchangers.

MAGNETIC PROPERTIES OF SOLID 3He WITH 4He IMPURITIES IN A HUBBARD-LIKE MODEL

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-228-C1-230
Author(s):  
R. BALAKRISHNAN ◽  
R. V. LANGE
Keyword(s):  
Magnetic Properties ◽  
Solid 3He

3He NUCLEAR MAGNETIC RELAXATION BEHAVIOURS IN HCP SOLID 3He WITH 4He IMPURITIES

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-115-C6-116 ◽  
Author(s):  
S. Maegawa ◽  
T. Mizusaki ◽  
Y. Hirayochi ◽  
T. Kusumoto ◽  
A. Hirai
Keyword(s):  
Magnetic Relaxation ◽  
Nuclear Magnetic Relaxation ◽  
Solid 3He ◽  
Nuclear Magnetic

Heat Capacities of Rare Gases Adsorbed on Graphite.

1986 ◽  
Author(s):  
Franco Battaglia ◽  
Young S. Kim ◽  
Thomas F. George
Keyword(s):  
Heat Capacities ◽  
Rare Gases
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