Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Charge Transfer and Structural Anomaly in Stoichiometric Layered Perovskite Sr2Co0.5Ir0.5O4

Mikhailova, D., Hu, Z., Kuo, C.-Y., Oswald, S., Mogare, K. M., Agrestini, S., et al. (2017). Charge Transfer and Structural Anomaly in Stoichiometric Layered Perovskite Sr2Co0.5Ir0.5O4. European Journal of Inorganic Chemistry, 2017(3), 587-595. doi:10.1002/ejic.201600970.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Mikhailova, Daria1, Autor           
Hu, Zhiwei2, Autor           
Kuo, Chang-Yang3, Autor           
Oswald, Steffen4, Autor
Mogare, Kailash M.5, Autor           
Agrestini, Stefano6, Autor           
Lee, Jyh-Fu4, Autor
Pao, Chin-Wen4, Autor
Chen, Shin-An4, Autor
Lee, Jenn-Min4, Autor
Haw, Shu-Chih4, Autor
Chen, Jin-Ming4, Autor
Liao, Yen-Fa4, Autor
Ishii, Hirofumi4, Autor
Tsuei, Ku-Ding4, Autor
Senyshyn, Anatoliy4, Autor
Ehrenberg, Helmut4, Autor
Affiliations:
1Daria Mikhailova, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863448              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
3Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
4External Organizations, ou_persistent22              
5Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
6Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863459              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: A layered Sr2Co0.5Ir0.5O4 (space group I4/mmm) perovskite of the K2NiF4 structure type was synthesized as a single-phase sample. Neutron powder diffraction measurements revealed full site occupancy of oxygen atoms. The Co3+/Ir5+ valence states were evaluated by a combination of X-ray absorption and X-ray photoemission spectroscopy as well as by magnetization measurements, and thus the differences to the parent compounds Sr2CoO4 and Sr2IrO4 with similar structures were confirmed. Co-K edge EXAFS studies indicated a long average Co-O distance of 1.967 A suggestina high-spin state of the Co3+ ion in Sr2Co0.5Ir0.5O4. No long-range magnetic ordering down to 4 K was detected by neutron powder diffraction, probably hindered by the random distribution of Co and Ir cations in the Sr2Co0.5Ir0.5O4 structure. High-pressure synchrotron powder diffraction studies showed stability of the Sr2Co0.5Ir0.5O4 structure up to at least 27 GPa at room temperature. A maximum in the c/a ratio at 10 GPa together with an anomaly in the pressure dependence of the unit-cell volume could be a sign of a change in the spin state of the Co ions under pressure.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2017-01-242017-01-24
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000393405500008
DOI: 10.1002/ejic.201600970
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: European Journal of Inorganic Chemistry
  Andere : Eur. J. Inorg. Chem.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Weinheim, Germany : Wiley-VCH
Seiten: - Band / Heft: 2017 (3) Artikelnummer: - Start- / Endseite: 587 - 595 Identifikator: ISSN: 1434-1948
CoNE: https://pure.mpg.de/cone/journals/resource/954926953810_1