Magnetic and structural instabilities in CePd2Al2 and LaPd2Al2

Magnetic and structural instabilities in CePd2Al2 and LaPd2Al2

We have investigated the crystal and magnetic structure of the RPd2Al2 compounds (R=La, Ce) by neutron powder diffraction (ND) and inelastic neutron scattering (INS). The ND study shows that both compounds undergo a structural phase transition from tetragonal to orthorhombic symmetry at 91.5K (La) a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-380, p.819-820
Hauptverfasser: Chapon, L.C., Goremychkin, E.A., Osborn, R., Rainford, B.D., Short, S.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We have investigated the crystal and magnetic structure of the RPd2Al2 compounds (R=La, Ce) by neutron powder diffraction (ND) and inelastic neutron scattering (INS). The ND study shows that both compounds undergo a structural phase transition from tetragonal to orthorhombic symmetry at 91.5K (La) and 13.5K (Ce). In the case of CePd2Al2 the crystal field excitation spectrum, which has an extra peak that cannot be explained by a standard crystal field model, indicates the presence of strong magneto-elastic coupling.
ISSN:0921-4526
DOI:10.1016/j.physb.2006.01.300