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Solid state chemistry of rare earth oxides. Technical progress report, 1974--1975. [High-resolution electron optical methods at 3 A resolution]

Description: Electron microscope images obtained at about 3A resolution for Pr/sub 7/O/sub 12/ (and isomorphous Zr/sub 3/Sc/sub 4/O/sub 12/) are in excellent agreement with calculated images based upon the structure determined separately by total profile neutron powder diffraction analysis. The image calculation programs establish the efficacy of lattice image interpretation in structural terms for these types of related phases whose structures are as yet beyond conventional means to determine. Such images … more
Date: June 25, 1975
Creator: Eyring, LeRoy; Summerville, Edward & Skarnulis, A. Jerome
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Solid state chemistry of rare earth oxides. Technical progress report, 1975--1976. [Pr/sub 7/O/sub 12/; Pr/sub 10/O/sub 18/; HfO/sub 2/. xEr/sub 2/O/sub 3/]

Description: It has been demonstrated that electron microscope images obtained at about 3A resolution for Pr/sub 7/O/sub 12/ are in agreement with calculated images based upon known structures. This establishes the efficacy of crystal structure image interpretation in structural terms, including the defect structure and mechanism of phase reactions, for these types of related phases whose structures are as yet beyond conventional means to determine. Further work on the epsilon (Pr/sub 10/O/sub 18/) phase is… more
Date: April 15, 1976
Creator: Eyring, LeRoy; Skarnulis, A. Jerome; Tuenge, R. T. & Von Dreele, R. B.
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