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META

Crystal structures of cerium metal at high pressure

Zachariasen, W.H.; Ellinger, F.H.
Los Alamos Scientific Lab., N.Mex. (USA)1976

[en] The high pressure form of cerium metal stable above 51 kbar, α'-Ce, is found to be orthorhombic with the α-U type of structure. At 58 kbar the cell dimensions of α'-Ce are: a = 3.049 A, b = 5.998 A, c = 5.215 A. A second, metastable phase of cerium metal, α''-Ce, has also been observed. It is monoclinic body-centered with a deformed, face-centered cubic (fcc) structure. The cell dimensions of α''-Ce at 56 kbar are: a = 4.762 A, b = 3.170 A, c = 3.169 A, β = 91.73⁰. The volume change at the α-α' transition point is ΔV/V = 0.011. Cerium metal is fully tetravalent in both α'-Ce and α''-Ce. 9 tables

Primary Subject

MATERIALS SCIENCE (B2200)

Source

Feb 1976; 10 p; Available from NTIS; Available from NTIS. $3.50.

Record Type

Report

Report Number

LA--6251

Country of publication

United States

Descriptors (DEI)

CERIUM, CRYSTAL STRUCTURE, PHASE TRANSFORMATIONS, PRESSURE DEPENDENCE, VERY HIGH PRESSURE, VOLUME

Descriptors (DEC)

ELEMENTS, METALS, RARE EARTHS

Reference NumberReference Number

7275162

INIS VolumeINIS Volume

INIS IssueINIS Issue

PDF

Unit cell of the zeta phase of the plutonium--zirconium and the plutonium--hafnium systems

Zachariasen, W.H.; Ellinger, F.H.
Los Alamos Scientific Lab., N.Mex. (USA)1970

AbstractAbstract

No abstract available

Primary Subject

MATERIALS SCIENCE (B2200)

Source

26 Jan 1970; 4 p

Record Type

Report

Report Number

LA--4367

Country of publication

United States

Descriptors (DEI)

HAFNIUM ALLOYS, LATTICES, PLUTONIUM ALLOYS, ZIRCONIUM ALLOYS

Reference NumberReference Number

1002539

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Plutonium--scandium system

Ellinger, F.H.; Johnson, K.A.; Land, C.C.
Los Alamos Scientific Lab., N.Mex. (USA)1972

AbstractAbstract

No abstract available

Primary Subject

MATERIALS SCIENCE (B2200)

Source

Nov 1972; 6 p

Record Type

Report

Report Number

LA--5055

Country of publication

United States

Descriptors (DEI)

PHASE DIAGRAMS, PLUTONIUM ALLOYS, SCANDIUM ALLOYS

Descriptors (DEC)

ALLOYS, DIAGRAMS

Reference NumberReference Number

4060711

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Lattice parameters of the ternary delta phases Pu--Ga--Al and Pu--Ga--Zr

Ellinger, F.H.; Gibbs, M.; Vigil, P.
Los Alamos Scientific Lab., N.Mex. (USA)1973

AbstractAbstract

No abstract available

Primary Subject

MATERIALS SCIENCE (B2200)

Source

Aug 1973; 4 p

Record Type

Report

Report Number

LA--5319

Country of publication

United States

Descriptors (DEI)

ALUMINIUM ALLOYS, CHEMICAL COMPOSITION, GALLIUM ALLOYS, HIGH TEMPERATURE, LATTICE PARAMETERS, PLUTONIUM BASE ALLOYS, PLUTONIUM-DELTA, QUANTITY RATIO, SOLID SOLUTIONS, SOLUBILITY

Descriptors (DEC)

ACTINIDES, ALLOYS, DISPERSIONS, ELEMENTS, METALS, MIXTURES, PLUTONIUM, PLUTONIUM ALLOYS, SOLUTIONS, TRANSURANIUM ELEMENTS

Reference NumberReference Number

5097089

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

The crystal structures of cerium metal at high pressure

Zachariasen, W.H.; Ellinger, F.H.1977

AbstractAbstract

[en] The high-pressure form of cerium metal stable above 51 kbar, α'-Ce, is found to be orthorhombic with the α-uranium type of structure. At 58 kbar the cell dimensions of α'-Ce are a=3.049, b=5.998, c=5.215 A. A second, metastable, phase of cerium metal α''-Ce, has also been observed. It is monoclinic body-centered with a deformed cubic face-centered structure. The cell dimensions of α''-Ce at 56 kbar are a=4.762, b=3.170, c=3.169 A, β=91.73⁰. The volume change at the α-α' transition point is ΔV/V=0.011. Cerium metal is fully tetravalent in both α'-Ce and α''-Ce. (Auth.)

Primary Subject

MATERIALS SCIENCE (B2200)

Record Type

Journal Article

Journal

Acta Crystallographica. Section A: Foundations of Crystallography; v. 33(1); p. 155-160

Country of publication

Denmark

Descriptors (DEI)

BOND LENGTHS, CERIUM, CRYSTAL-PHASE TRANSFORMATIONS, FCC LATTICES, LATTICE PARAMETERS, MEDIUM TEMPERATURE, MONOCLINIC LATTICES, ORTHORHOMBIC LATTICES, PRESSURE DEPENDENCE, VALENCE, VERY HIGH PRESSURE, X-RAY DIFFRACTION

Descriptors (DEC)

COHERENT SCATTERING, CRYSTAL LATTICES, CRYSTAL STRUCTURE, CUBIC LATTICES, DIFFRACTION, ELEMENTS, METALS, PHASE TRANSFORMATIONS, RARE EARTHS, SCATTERING

Reference NumberReference Number

8303063

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Plutonium--zirconium phase diagram

Ellinger, F.H.; Land, C.C.1970

AbstractAbstract

No abstract available

Primary Subject

MATERIALS SCIENCE (B2200)

Source

4. international conference on plutonium and other actinides; Sante Fe, N. Mex; 5 Oct 1970

Record Type

Journal Article

Literature Type

Progress Report

Journal

Nucl. Met., Met. Soc. AIME; v. 17 p. 686-698

Country of publication

United States

Descriptors (DEI)

CASTING, HEAT TREATMENTS, METALLURGY, PHASE DIAGRAMS, PLUTONIUM ALLOYS, ZIRCONIUM ALLOYS

Reference NumberReference Number

2008903

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Constitution of plutonium-rich plutonium--osmium alloys

Ellinger, F.H.; Land, C.C.1970

AbstractAbstract

No abstract available

Primary Subject

MATERIALS SCIENCE (B2200)

Source

4. international conference on plutonium and other actinides; Sante Fe, N. Mex; 5 Oct 1970

Record Type

Journal Article

Literature Type

Progress Report

Journal

Nucl. Met., Met. Soc. AIME; v. 17 p. 679-685

Country of publication

United States

Descriptors (DEI)

PLUTONIUM ALLOYS, METALLURGY, OSMIUM ALLOYS, PHASE DIAGRAMS, PLUTONIUM BASE ALLOY

Reference NumberReference Number

2008902

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Structure of cerium metal at high pressure

Ellinger, F.H.; Zachariasen, W.H.1974

AbstractAbstract

No abstract available

Original Title

α--uranium type structure, effective metallic radius, compressibility, α' phase, to about 110 kbar, γ and α phases

Primary Subject

MATERIALS SCIENCE (B2200)

Record Type

Journal Article

Journal

Physical Review Letters; v. 32(14); p. 773-774

Country of publication

United States

Descriptors (DEI)

CERIUM, COMPRESSIBILITY, LATTICE PARAMETERS, PHASE TRANSFORMATIONS, VERY HIGH PRESSURE, X-RAY DIFFRACTION

Descriptors (DEC)

COHERENT SCATTERING, DIFFRACTION, ELEMENTS, MECHANICAL PROPERTIES, METALS, RARE EARTHS, SCATTERING

Reference NumberReference Number

5145832

INIS VolumeINIS Volume

INIS IssueINIS Issue

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