Jahn-Teller-like phase transition of TmPd3S4 around 200 K
Identifieur interne : 002451 ( Main/Exploration ); précédent : 002450; suivant : 002452Jahn-Teller-like phase transition of TmPd3S4 around 200 K
Auteurs : J. Kitagawa [Japon] ; E. Matsuoka [Japon] ; N. Takeda [Japon] ; M. Ishikawa [Japon]Source :
- Physical review. B, Condensed matter [ 0163-1829 ] ; 1999-12-01.
Descripteurs français
- Pascal (Inist)
- 7580, 7540C, 7550, 7170E, Etude théorique, Etude expérimentale, Thulium composé, Palladium composé, Résistivité électrique, Chaleur massique, Susceptibilité magnétique, Diffraction RX, Effet Jahn Teller, Hystérésis, Transformation phase état solide, Interaction échange électron, Matériau antiferromagnétique, Moment magnétique.
English descriptors
- KwdEn :
Abstract
We report a Jahn-Teller-like phase transition in a synthesized metallic compound, TmPd3S4, of the cubic NaPt3O4 structure type. The transition causes a very large thermal hysteresis in the electrical resistivity between 120 and 230 K and a modulated structure with a modulation vector of about 18a* (a*: reciprocal-lattice unit vector) at lower temperatures which was revealed by a low-temperature x-ray powder diffraction. Analyses on the low-temperature specific heat and the magnetic susceptibility suggest that the compound becomes an exchange-induced moment antiferromagnet (TN=1.1 K) by the nonmagnetic singlet ground state of Tm3+ ions.
Affiliations:
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Le document en format XML
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<term>Hysteresis</term>
<term>Jahn-Teller effect</term>
<term>Magnetic moments</term>
<term>Magnetic susceptibility</term>
<term>Palladium compounds</term>
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<term>Etude théorique</term>
<term>Etude expérimentale</term>
<term>Thulium composé</term>
<term>Palladium composé</term>
<term>Résistivité électrique</term>
<term>Chaleur massique</term>
<term>Susceptibilité magnétique</term>
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<front><div type="abstract" xml:lang="en">We report a Jahn-Teller-like phase transition in a synthesized metallic compound, TmPd<sub>3</sub>
S<sub>4</sub>
, of the cubic NaPt<sub>3</sub>
O<sub>4</sub>
structure type. The transition causes a very large thermal hysteresis in the electrical resistivity between 120 and 230 K and a modulated structure with a modulation vector of about 18a<sup>*</sup>
(a<sup>*</sup>
: reciprocal-lattice unit vector) at lower temperatures which was revealed by a low-temperature x-ray powder diffraction. Analyses on the low-temperature specific heat and the magnetic susceptibility suggest that the compound becomes an exchange-induced moment antiferromagnet (T<sub>N</sub>
=1.1 K) by the nonmagnetic singlet ground state of Tm<sup>3+</sup>
ions.</div>
</front>
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