Synthesis, Crystal Structure, and Magnetic Properties of Quasi-One-Dimensional Oxides Ca3CuMnO6 and Ca3Co1+xMn1−xO6

✍ Scribed by V.G. Zubkov; G.V. Bazuev; A.P. Tyutyunnik; I.F. Berger

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 384 KB
• Volume: 160
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2001.9198

✦ Synopsis

Synthesis conditions, crystal structures, and magnetic properties of quasi-one-dimensional complex oxides Ca 3 CuMnO 6 (space group P-1, z ‫؍‬ 4, triclinic cell) and Ca 3 Co 1؉x Mn 1؊x O 6 with x ‫؍‬ 0, 0.25, 1.0 (structural type K 4 CdCl 6 , space group R-3c, z ‫؍‬ 6) are presented. The crystal structures of Ca 3 CoMnO 6 and Ca 3 CuMnO 6 were re5ned using neutron and combined X-ray and neutron di4raction analysis, respectively. The interatomic distances in oxygen polyhedra were found. In contrast to ferromagnetic Ca 3 Co 2 O 6 (T C ‫؍‬ 24 K), manganese-containing phases Ca 3 Co 1؉x Mn 1؊x O 6 are characterized by antiferromagnetic interactions with Neel temperatures 18 K (x ‫؍‬ 0.25) and 13 K (x ‫؍‬ 0). For Ca 3 CuMnO 6 T N was established to be 6 K.