High-Pressure Polymorph of Thulium: An X-ray Diffraction Study.
Identifieur interne : 000891 ( PubMed/Corpus ); précédent : 000890; suivant : 000892High-Pressure Polymorph of Thulium: An X-ray Diffraction Study.
Auteurs : L G Liu ; W A Bassett ; M S LiuSource :
- Science (New York, N.Y.) [ 0036-8075 ] ; 1973.
Abstract
An x-ray diffractiotn study of thulium at room temperature and high pressure by means of a diamond-anvil press has shown that thulium transforms from a hexagonal close-packed structure to the samarium type, as other rareearth elements (gadolinium, terbium, dysprosium, and holmium) do. Unlike the other rare-earth elements, thulium (hexagonal close-packed) has an axial ratio (c/a) that is independent of pressure within experimental error and the transition is reversible. The transition occurs with increasing pressure in the range of 60 to 116 kilobars. The lattice paralieters of the samarium-type phase of thulium at about 116 kilobars are a = 3.327 +/- 0.005 angstroms and c = 23.48 +/- 0.04 angstroms, and the volume change at the transition is estimated to be - 0.5 percent of the volume of the hexagonal close-packed phase at the transition.
DOI: 10.1126/science.180.4083.298
PubMed: 17816290
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">High-Pressure Polymorph of Thulium: An X-ray Diffraction Study.</title><author><name sortKey="Liu, L G" sort="Liu, L G" uniqKey="Liu L" first="L G" last="Liu">L G Liu</name></author><author><name sortKey="Bassett, W A" sort="Bassett, W A" uniqKey="Bassett W" first="W A" last="Bassett">W A Bassett</name></author><author><name sortKey="Liu, M S" sort="Liu, M S" uniqKey="Liu M" first="M S" last="Liu">M S Liu</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1973">1973</date><idno type="doi">10.1126/science.180.4083.298</idno><idno type="RBID">pubmed:17816290</idno><idno type="pmid">17816290</idno><idno type="wicri:Area/PubMed/Corpus">000891</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000891</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">High-Pressure Polymorph of Thulium: An X-ray Diffraction Study.</title><author><name sortKey="Liu, L G" sort="Liu, L G" uniqKey="Liu L" first="L G" last="Liu">L G Liu</name></author><author><name sortKey="Bassett, W A" sort="Bassett, W A" uniqKey="Bassett W" first="W A" last="Bassett">W A Bassett</name></author><author><name sortKey="Liu, M S" sort="Liu, M S" uniqKey="Liu M" first="M S" last="Liu">M S Liu</name></author></analytic><series><title level="j">Science (New York, N.Y.)</title><idno type="ISSN">0036-8075</idno><imprint><date when="1973" type="published">1973</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">An x-ray diffractiotn study of thulium at room temperature and high pressure by means of a diamond-anvil press has shown that thulium transforms from a hexagonal close-packed structure to the samarium type, as other rareearth elements (gadolinium, terbium, dysprosium, and holmium) do. Unlike the other rare-earth elements, thulium (hexagonal close-packed) has an axial ratio (c/a) that is independent of pressure within experimental error and the transition is reversible. The transition occurs with increasing pressure in the range of 60 to 116 kilobars. The lattice paralieters of the samarium-type phase of thulium at about 116 kilobars are a = 3.327 +/- 0.005 angstroms and c = 23.48 +/- 0.04 angstroms, and the volume change at the transition is estimated to be - 0.5 percent of the volume of the hexagonal close-packed phase at the transition.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">17816290</PMID><DateCreated><Year>2010</Year><Month>06</Month><Day>08</Day></DateCreated><DateCompleted><Year>2010</Year><Month>07</Month><Day>02</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Print">0036-8075</ISSN><JournalIssue CitedMedium="Print"><Volume>180</Volume><Issue>4083</Issue><PubDate><Year>1973</Year><Month>Apr</Month><Day>20</Day></PubDate></JournalIssue><Title>Science (New York, N.Y.)</Title><ISOAbbreviation>Science</ISOAbbreviation></Journal><ArticleTitle>High-Pressure Polymorph of Thulium: An X-ray Diffraction Study.</ArticleTitle><Pagination><MedlinePgn>298-9</MedlinePgn></Pagination><Abstract><AbstractText>An x-ray diffractiotn study of thulium at room temperature and high pressure by means of a diamond-anvil press has shown that thulium transforms from a hexagonal close-packed structure to the samarium type, as other rareearth elements (gadolinium, terbium, dysprosium, and holmium) do. Unlike the other rare-earth elements, thulium (hexagonal close-packed) has an axial ratio (c/a) that is independent of pressure within experimental error and the transition is reversible. The transition occurs with increasing pressure in the range of 60 to 116 kilobars. The lattice paralieters of the samarium-type phase of thulium at about 116 kilobars are a = 3.327 +/- 0.005 angstroms and c = 23.48 +/- 0.04 angstroms, and the volume change at the transition is estimated to be - 0.5 percent of the volume of the hexagonal close-packed phase at the transition.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>L G</ForeName><Initials>LG</Initials></Author><Author ValidYN="Y"><LastName>Bassett</LastName><ForeName>W A</ForeName><Initials>WA</Initials></Author><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>M S</ForeName><Initials>MS</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Science</MedlineTA><NlmUniqueID>0404511</NlmUniqueID><ISSNLinking>0036-8075</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1973</Year><Month>4</Month><Day>20</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1973</Year><Month>4</Month><Day>20</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1973</Year><Month>4</Month><Day>20</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">180/4083/298</ArticleId><ArticleId IdType="doi">10.1126/science.180.4083.298</ArticleId><ArticleId IdType="pubmed">17816290</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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