Influence of pressure on the magnetic ordering of CeNiSnH and CeNiSnH<sub>1.8</sub> hydrides
RODRÍGUEZ FERNÁNDEZ, Jesus
Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
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Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
RODRÍGUEZ FERNÁNDEZ, Jesus
Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
TORRALBO-CAMPO, L.
Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
< Reduce
Departamento de ciencias de la tierra y física de la materia condensada [CITIMAC]
Language
en
Article de revue
This item was published in
Journal of Physics: Condensed Matter. 2009, vol. 21, n° 30, p. 305601 (7 p.)
IOP Publishing
English Abstract
The magnetic properties of the antiferromagnet CeNiSnH and of the ferromagnet CeNiSnH<sub>1.8</sub> on hydrostatic pressure (0≤<i>P</i>≤10.8 bar) have been determined using a miniature piston–cylinder CuBe pressure cell. ...Read more >
The magnetic properties of the antiferromagnet CeNiSnH and of the ferromagnet CeNiSnH<sub>1.8</sub> on hydrostatic pressure (0≤<i>P</i>≤10.8 bar) have been determined using a miniature piston–cylinder CuBe pressure cell. With increasing <i>P</i>, the Néel temperature of CeNiSnH increases weakly from 4.77 to 5.01 K whereas the Curie temperature of CeNiSnH<sub>1.8</sub> decreases rapidly from 7.16 to 5.30 K. Similar pressure dependence is also observed in the critical field of the metamagnetic transition of CeNiSnH and in the coercive field of CeNiSnH<sub>1.8</sub>. Electronic structure calculations for these hydrides within the density functional theory show agreement with the experimental findings. Detailed examination of the chemical bonding features point to the conclusion that the antibonding Ce–Ni states below the Fermi level for CeNiSnH<sub>1.8</sub> could be responsible for the decrease of its Curie temperature under applied pressure.Read less <
English Keywords
Hydrides
High pressure
Inorganic compounds
Antiferromagnetism
Magnetism
Origin
Hal imported