Spin transition in [Fe(PM-BiA)(2)(NCS)(2)] studied by the electron paramagnetic resonance of the Mn2+ ion
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | DAUBRIC, Hervé | |
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | KLIAVA, Janis | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GUIONNEAU, Philippe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHASSEAU, Daniel | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LÉTARD, Jean-François | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | KAHN, Olivier | |
| dc.date.issued | 2000 | |
| dc.identifier.issn | 0953-8984 | |
| dc.description.abstractEn | The spin transition of Fe2+ ions in the mononuclear compound cis-bis(thiocyanato)-bis(N-2'-pyridylmethylene)-4-(aminobiphenyl)-iron(II) is studied by electron paramagnetic resonance (EPR) of Mn2+. In cooling the compound down to the temperature range 174-168 K, the Fe2+ ions undergo a complete transition from the high spin (HS, S = 2) to the low spin (LS, S = 0) state, occurring with a narrow, ~5 K and unusually sharp hysteresis loop. The temperature dependence of the unit cell parameters is almost linear on both sides of the spin transition; the variation of the unit cell parameters at the spin transition is very anisotropic. The EPR spectra, typical of the Mn2+ ion, only gradually change with temperature in the two spin states of Fe2+ but undergo a striking transformation in the spin transition range. This shows that a considerable cooperativity exists between the metal ions. Computer simulations using a laboratory-developed simulation program indicate significant changes in the zero-field splitting (zfs) parameters in the course of the spin transition. Lower-than-axial symmetry of the environment of Mn2+ persists in both spin states of Fe2+; however, a stronger axial distortion arises in the HS state. | |
| dc.language.iso | en | |
| dc.publisher | IOP Publishing | |
| dc.title.en | Spin transition in [Fe(PM-BiA)(2)(NCS)(2)] studied by the electron paramagnetic resonance of the Mn2+ ion | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0953-8984/12/25/312 | |
| dc.subject.hal | Physique [physics] | |
| bordeaux.journal | Journal of Physics: Condensed Matter | |
| bordeaux.page | 5481-5494 | |
| bordeaux.volume | 12 | |
| bordeaux.issue | 25 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01550511 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01550511v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physics:%20Condensed%20Matter&rft.date=2000&rft.volume=12&rft.issue=25&rft.spage=5481-5494&rft.epage=5481-5494&rft.eissn=0953-8984&rft.issn=0953-8984&rft.au=DAUBRIC,%20Herv%C3%A9&KLIAVA,%20Janis&GUIONNEAU,%20Philippe&CHASSEAU,%20Daniel&L%C3%89TARD,%20Jean-Fran%C3%A7ois&rft.genre=article |
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