Diffusion crucible and slab member with common metal component i

Details Diffusion crucible and slab member with common metal component i Diffusion crucible and slab member with common metal component i

1976-10-08

1978-01-31

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

156613, 156612, 427 86, 427162, 423593, 156DIG83, 350 96WG, B01D 900

Patent

active

040713237

ABSTRACT:
A slotted crucible for altering the nonstoichiometry of a crystalline member by promoting conditions of vapor phase equilibrium between the member and the slotted crucible in which it is placed. The slotted crucible comprises material sharing a common vapor species with the crystalline member and provides an atmosphere of substantially constant thermodynamic activity with respect to the shared vapor phase upon isothermal heating of the member and crucible.

REFERENCES:
patent: 3796552 (1974-03-01), Robinson et al.
Holman, "Novel Uses of the Thermo-Microbalance in the Determination of Non Stoichiometry in Complex Oxide Systems", J. Vac. Sci. Tech., vol. 11,No. 1, Jan., Feb. 1974 (pp. 434-439).
Holman et al., "Intrinsic Non Stoichiometry in the Lead Zirconate-Lead Titanate System Determined by Knudsen Effusion", J. Appl. Phys., vol. 44, No. 12, Dec. 1973 (pp. 5227-5236).

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