Novel Mixed Cobalt/Chromium Phosphate NaCoCr2(PO4)3 Showing Spin-Flop Transition.
Identifieur interne : 000010 ( PubMed/Corpus ); précédent : 000009; suivant : 000011Novel Mixed Cobalt/Chromium Phosphate NaCoCr2(PO4)3 Showing Spin-Flop Transition.
Auteurs : Khalifa Souiwa ; Madhu Chennabasappa ; Rodolphe Decourt ; Mongi Ben Amara ; Mourad Hidouri ; Olivier ToulemondeSource :
- Inorganic chemistry [ 1520-510X ] ; 2015.
Abstract
We describe the synthesis and the crystallographic and magnetic properties of a novel NaCoCr2(PO4)3 phosphate. A conventional solid-state reaction was used to obtain single-phase powders. A Rietveld analysis of powder X-ray diffraction data proposes an orthorhombic symmetry similar to α-CrPO4-type structure in space group Imma with the following unit cell parameters: a = 10.413(1) Å; b = 13.027(1) Å; c = 6.372(1) Å. The framework consists of PO4 tetrahedra, M(1)O6 (M(1) = Cr) octahedra, and M(2)2O10 (M(2) = 0.5Cr+0.5Co) binuclear unit of edge-sharing MO6 octahedra. It can be described in terms of two building blocks: sheets consisting of corner-sharing M(2)2O10 units with PO4 tetrahedra found parallel to the (b,c) plane, and chains made by corner-sharing CrO6 octahedra and PO4 tetrahedra running along the b axis. From the interconnection of the sheets and chains, a 3D rigid skeleton is formed, exhibiting two kinds of intersecting tunnel channels containing the Na(+) ions. The proposed structure derives from the α-CrPO4-type structure considering a positive charge balance according to the equation Cr(3+) → Co(2+) + Na(+), resulting in sodium countercation introduction within the unoccupied channels shown in the α-CrPO4 framework. Temperature-dependent DC and AC magnetic susceptibility is indicative of a long-range magnetic ordering occurring at 32 K. Further, spin-flop transition sheds light on a chromium-based phosphate for the first time.
DOI: 10.1021/acs.inorgchem.5b00776
PubMed: 26161799
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Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Decourt, Rodolphe" sort="Decourt, Rodolphe" uniqKey="Decourt R" first="Rodolphe" last="Decourt">Rodolphe Decourt</name><affiliation><nlm:affiliation>‡CNRS, Univ. Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Ben Amara, Mongi" sort="Ben Amara, Mongi" uniqKey="Ben Amara M" first="Mongi" last="Ben Amara">Mongi Ben Amara</name><affiliation><nlm:affiliation>†Faculté des Sciences 5019, Monastir, Tunisie.</nlm:affiliation></affiliation></author><author><name sortKey="Hidouri, Mourad" sort="Hidouri, Mourad" uniqKey="Hidouri M" first="Mourad" last="Hidouri">Mourad Hidouri</name><affiliation><nlm:affiliation>†Faculté des Sciences 5019, Monastir, Tunisie.</nlm:affiliation></affiliation></author><author><name sortKey="Toulemonde, Olivier" sort="Toulemonde, Olivier" uniqKey="Toulemonde O" first="Olivier" last="Toulemonde">Olivier Toulemonde</name><affiliation><nlm:affiliation>‡CNRS, Univ. Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Inorganic chemistry</title><idno type="eISSN">1520-510X</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We describe the synthesis and the crystallographic and magnetic properties of a novel NaCoCr2(PO4)3 phosphate. A conventional solid-state reaction was used to obtain single-phase powders. A Rietveld analysis of powder X-ray diffraction data proposes an orthorhombic symmetry similar to α-CrPO4-type structure in space group Imma with the following unit cell parameters: a = 10.413(1) Å; b = 13.027(1) Å; c = 6.372(1) Å. The framework consists of PO4 tetrahedra, M(1)O6 (M(1) = Cr) octahedra, and M(2)2O10 (M(2) = 0.5Cr+0.5Co) binuclear unit of edge-sharing MO6 octahedra. It can be described in terms of two building blocks: sheets consisting of corner-sharing M(2)2O10 units with PO4 tetrahedra found parallel to the (b,c) plane, and chains made by corner-sharing CrO6 octahedra and PO4 tetrahedra running along the b axis. From the interconnection of the sheets and chains, a 3D rigid skeleton is formed, exhibiting two kinds of intersecting tunnel channels containing the Na(+) ions. The proposed structure derives from the α-CrPO4-type structure considering a positive charge balance according to the equation Cr(3+) → Co(2+) + Na(+), resulting in sodium countercation introduction within the unoccupied channels shown in the α-CrPO4 framework. Temperature-dependent DC and AC magnetic susceptibility is indicative of a long-range magnetic ordering occurring at 32 K. Further, spin-flop transition sheds light on a chromium-based phosphate for the first time.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">26161799</PMID><DateCreated><Year>2015</Year><Month>8</Month><Day>3</Day></DateCreated><DateCompleted><Year>2015</Year><Month>10</Month><Day>07</Day></DateCompleted><DateRevised><Year>2015</Year><Month>8</Month><Day>3</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-510X</ISSN><JournalIssue CitedMedium="Internet"><Volume>54</Volume><Issue>15</Issue><PubDate><Year>2015</Year><Month>Aug</Month><Day>3</Day></PubDate></JournalIssue><Title>Inorganic chemistry</Title><ISOAbbreviation>Inorg Chem</ISOAbbreviation></Journal><ArticleTitle>Novel Mixed Cobalt/Chromium Phosphate NaCoCr2(PO4)3 Showing Spin-Flop Transition.</ArticleTitle><Pagination><MedlinePgn>7345-52</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/acs.inorgchem.5b00776</ELocationID><Abstract><AbstractText>We describe the synthesis and the crystallographic and magnetic properties of a novel NaCoCr2(PO4)3 phosphate. A conventional solid-state reaction was used to obtain single-phase powders. A Rietveld analysis of powder X-ray diffraction data proposes an orthorhombic symmetry similar to α-CrPO4-type structure in space group Imma with the following unit cell parameters: a = 10.413(1) Å; b = 13.027(1) Å; c = 6.372(1) Å. The framework consists of PO4 tetrahedra, M(1)O6 (M(1) = Cr) octahedra, and M(2)2O10 (M(2) = 0.5Cr+0.5Co) binuclear unit of edge-sharing MO6 octahedra. It can be described in terms of two building blocks: sheets consisting of corner-sharing M(2)2O10 units with PO4 tetrahedra found parallel to the (b,c) plane, and chains made by corner-sharing CrO6 octahedra and PO4 tetrahedra running along the b axis. From the interconnection of the sheets and chains, a 3D rigid skeleton is formed, exhibiting two kinds of intersecting tunnel channels containing the Na(+) ions. The proposed structure derives from the α-CrPO4-type structure considering a positive charge balance according to the equation Cr(3+) → Co(2+) + Na(+), resulting in sodium countercation introduction within the unoccupied channels shown in the α-CrPO4 framework. Temperature-dependent DC and AC magnetic susceptibility is indicative of a long-range magnetic ordering occurring at 32 K. Further, spin-flop transition sheds light on a chromium-based phosphate for the first time.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Souiwa</LastName><ForeName>Khalifa</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>†Faculté des Sciences 5019, Monastir, Tunisie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chennabasappa</LastName><ForeName>Madhu</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>‡CNRS, Univ. Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Decourt</LastName><ForeName>Rodolphe</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>‡CNRS, Univ. Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ben Amara</LastName><ForeName>Mongi</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>†Faculté des Sciences 5019, Monastir, Tunisie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hidouri</LastName><ForeName>Mourad</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>†Faculté des Sciences 5019, Monastir, Tunisie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Toulemonde</LastName><ForeName>Olivier</ForeName><Initials>O</Initials><AffiliationInfo><Affiliation>‡CNRS, Univ. Bordeaux, ICMCB, UPR 9048 F-33600, Pessac, France.</Affiliation></AffiliationInfo></Author></AuthorList><Language>ENG</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>Jul</Month><Day>10</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Inorg Chem</MedlineTA><NlmUniqueID>0366543</NlmUniqueID><ISSNLinking>0020-1669</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>7</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2015</Year><Month>7</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>7</Month><Day>15</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26161799</ArticleId><ArticleId IdType="doi">10.1021/acs.inorgchem.5b00776</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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