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Crystal structure and ferromagnetism of the ▫$CeFe_9Si_4$▫ intermetallic compoundKoželj, Primož, 1987- ...We have determined the crystal structure and the magnetic state of the CeFe9Si4 intermetallic compound. Our revised structural model (fully ordered tetragonal unit cell, I4/ mcm) agrees with the ... previous literature report, except for some minor quantitative differences. Magnetically, the CeFe9Si4 undergoes a ferromagnetic transition at the temperature TC ≈ 94 K. Ferromagnetism in the combined Ce−Fe spin system is a result of interplay between the localized magnetism of the Ce sublattice and the Fe band (itinerant) magnetism. Ferromagnetic ordering obeys the rather general rule that the exchange spin coupling between atoms possessing more than half-full d shells with atoms possessing less than half-full d shells is antiferromagnetic (where the Ce atoms are considered as light d elements). Since in rare-earth metals from the light half of the lanthanide series, the magnetic moment is directed opposite to the spin, this results in ferromagnetism. The magnetoresistance and the magnetic specific heat show an additional temperature-dependent feature (a shoulder) deep inside the ferromagnetic phase that is considered to originate from the influence of the magnetization on the electronic band structure via the magnetoelastic coupling, which alters the Fe band magnetism below TC. The ferromagnetic phase of CeFe9Si4 is magnetically soft.Source: Inorganic chemistry [Elektronski vir]. - ISSN 1520-510X (Vol. 62, iss. 15, Apr. 2023, str. 6169-6180)Type of material - e-articlePublish date - 2023Language - englishCOBISS.SI-ID - 148177411
Author
Koželj, Primož, 1987- |
Vrtnik, Stanislav |
Luzar, Jože, 1987- |
Jelen, Andreja |
Semsari Parapari, Sorour |
Wencka, Magdalena |
Šturm, Sašo |
Dolinšek, Janez, 1957-
Topics
crystal structure |
diffraction |
magnetic properties |
phase transitions |
intermetallic compounds |
kristalna struktura
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Koželj, Primož, 1987- | 35466 |
Vrtnik, Stanislav | 26471 |
Luzar, Jože, 1987- | 35541 |
Jelen, Andreja | 32150 |
Semsari Parapari, Sorour | 51451 |
Wencka, Magdalena | 57459 |
Šturm, Sašo | 19030 |
Dolinšek, Janez, 1957- | 03939 |
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