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Titolo:
EVIDENCE FOR LOCALIZED 4F STATES IN ALPHA-CE
Autore:
MURANI AP; BOWDEN ZA; TAYLOR AD; OSBORN R; MARSHALL WG;
Indirizzi:
INST MAX VON LAUE PAUL LANGEVIN,156X F-38042 GRENOBLE FRANCE RUTHERFORD APPLETON LAB,ISIS FACIL DIDCOT OX11 0QX OXON ENGLAND ARGONNE NATL LAB ARGONNE IL 60439 UNIV LONDON BIRKBECK COLL LONDON WC1E 7HX ENGLAND
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 18, volume: 48, anno: 1993,
pagine: 13981 - 13984
SICI:
0163-1829(1993)48:18<13981:EFL4SI>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-SPECTROSCOPY; NEUTRON-SCATTERING; GAMMA TRANSITION; VOLUME COLLAPSE; CERIUM; ENERGY; PHOTOEMISSION;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
A.P. Murani et al., "EVIDENCE FOR LOCALIZED 4F STATES IN ALPHA-CE", Physical review. B, Condensed matter, 48(18), 1993, pp. 13981-13984

Abstract

Paramagnetic spectra of gamma and alpha-Ce measured at the same temperature using high-energy neutrons (approximately 2 eV) yield a 4f occupancy of approximately 0.8 in alpha-Ce. This phase of Ce also shows single-ion magnetic response but with a high Kondo energy of approximately 1800 K. In gamma-Ce we observe the F-2(5/2)-->F-2(7/2) spin-orbit (SO) excitation at approximately 260 meV. Remarkably, alpha-Ce also reveals a broad SO excitation shifted to a higher energy (approximately 450 meV). These observations reinforce the idea of localized 4f states in alpha-Ce and k-f hybridization as the driving mechanism for the gamma <----> alpha transition.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/08/20 alle ore 13:06:37