Spin transition in Co3+ by optical absorption and time-resolved spectroscopy under pressure: An appraisal of the different spin states
| hal.structure.identifier | Universidad de Cantabria [Santander] = University of Cantabria [Spain] = Université de Cantabrie [Espagne] [UC / UniCan] | |
| dc.contributor.author | SANZ-ORTIZ, Marta N. | |
| hal.structure.identifier | Universidad de Cantabria [Santander] = University of Cantabria [Spain] = Université de Cantabrie [Espagne] [UC / UniCan] | |
| dc.contributor.author | RODRÍGUEZ, Fernando | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DEMAZEAU, Gérard | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 0895-7959 | |
| dc.description.abstractEn | This work investigates the electronic structure of CoF3 by optical absorption and its relationship with the ground-state spin and the Jahn-Teller (JT) effect exhibited by Co3+(d6) in octahedral coordination (CoF6)3-. The results are compared with other Co3+ fluorides and oxides, where Co3+ is high spin (HS) and low spin (LS), respectively. In CoF3 we detect an absorption band with a doublet structure at 1.89eV (657nm) and 1.45eV (855nm) at 2.5GPa, which is associated with the T e JT effect on the 5T2 HS ground state. Absorption measurements under pressure have been carried out around the HS-LS (5T2 1A1) spin crossover transition in the 0-20 GPa range. We show that the JT effect is stable in a wide pressure range. No sign of intermediate spin (3T1, 2 states) is observed in the explored pressure range. | |
| dc.language.iso | en | |
| dc.publisher | Taylor & Francis | |
| dc.subject.en | Cobalt | |
| dc.subject.en | CoF3 | |
| dc.subject.en | Intermediate spin | |
| dc.subject.en | Jahn-Teller effect | |
| dc.subject.en | Spin crossover | |
| dc.title.en | Spin transition in Co3+ by optical absorption and time-resolved spectroscopy under pressure: An appraisal of the different spin states | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1080/08957950802552119 | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| dc.subject.hal | Chimie/Chimie théorique et/ou physique | |
| bordeaux.journal | High Pressure Research | |
| bordeaux.page | 571-576 | |
| bordeaux.volume | 28 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00352991 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00352991v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=High%20Pressure%20Research&rft.date=2008&rft.volume=28&rft.issue=4&rft.spage=571-576&rft.epage=571-576&rft.eissn=0895-7959&rft.issn=0895-7959&rft.au=SANZ-ORTIZ,%20Marta%20N.&RODR%C3%8DGUEZ,%20Fernando&DEMAZEAU,%20G%C3%A9rard&rft.genre=article |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||