Ferrimagnetism in the High Pressure 6H-Perovskite BaCrO3

Ferrimagnetism in the High Pressure 6H-Perovskite BaCrO3

The 6‐layered hexagonal polymorph of BaCrO3 has been synthesized at 900 °C under a pressure of 9 GPa. The hexagonal structure (space group P63/mmc, cell parameters a = 5.3809(9) and c = 13.123(3) Å at 300 K) is stable on cooling down to 5 K. Ferrimagnetism with a small saturated magnetization of app...

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Veröffentlicht in:Zeitschrift für anorganische und allgemeine Chemie (1950) 2014-11, Vol.640 (14), p.2727-2729
Hauptverfasser: Arevalo-Lopez, Angel M., Reeves, Simon J., Attfield, J. Paul
Format: Artikel
Sprache:eng
Schlagworte:
Chromates
Ferrimagnetism
High pressure synthesis
Magnetic structure
Perovskite oxides
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Zusammenfassung:The 6‐layered hexagonal polymorph of BaCrO3 has been synthesized at 900 °C under a pressure of 9 GPa. The hexagonal structure (space group P63/mmc, cell parameters a = 5.3809(9) and c = 13.123(3) Å at 300 K) is stable on cooling down to 5 K. Ferrimagnetism with a small saturated magnetization of approx. 0.1 μB is observed below a Curie transition at TC = 192 K, and neutron diffraction shows that a simple collinear ferrimagnetic spin structure with moments parallel to c is adopted.
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201400353