Published February 1978
| Version v1
Journal article
High-resolution crystal structure images of beta phase (Pr24O44) in the praseodymium oxide system
Description
Crystal structure images of the beta phase in the praseodymium oxide system are presented. A structural model for Pr24O44 is developed which involves chemical twinning of a primitive triclinic unit cell (Pr12O22) in different ways, resulting in two possible polymorphs. Crystal structure images of the beta phase are compared with calculated images of one of the possible polymorphs and diffraction effects from this polymorph are shown to be compatible with those observed. A general structural principle is suggested which may be common to all intermediate phases in the binary rare earth oxide systems. 8 figures, 3 tables
Additional details
Additional titles
- Augmented title (English)
- Unit cell Pr_1_2O_2_2
Publishing Information
- Journal Title
- J. Solid State Chem.
- Journal Volume
- 24
- Journal Issue
- 1
- Series
- J. Solid State Chem.
- Journal Page Range
- 21-31
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 10423196
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CHEMICAL REACTION YIELD; CRYSTAL STRUCTURE; DIMERIZATION; ELECTRON DIFFRACTION; ELECTRON MICROSCOPY; IMAGES; PHASE TRANSFORMATIONS; PRASEODYMIUM OXIDES; SOLID SOLUTIONS; SPATIAL RESOLUTION; STRUCTURAL MODELS; TRICLINIC LATTICES
- Descriptors DEC
- CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; CRYSTAL LATTICES; DIFFRACTION; DISPERSIONS; HOMOGENEOUS MIXTURES; MICROSCOPY; MIXTURES; OXIDES; OXYGEN COMPOUNDS; POLYMERIZATION; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; RESOLUTION; SCATTERING; SOLUTIONS