Crystal Structure and Magnetic Properties of 6H-Perovskite Ba3NdRu2O9

✍ Scribed by Yoshihiro Doi; Yukio Hinatsu; Yutaka Shimojo; Yoshinobu Ishii

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 858 KB
• Volume: 161
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2001.9296

✦ Synopsis

Magnetic properties of a quaternary oxide Ba 3 NdRu 2 O 9 are reported. This compound adopts the 6H-perovskite structure with space group P6 3 /mmc, in which the cation sites within the face-sharing octahedra are occupied by ruthenium ions and those within the corner-sharing octahedra are occupied by neodymium ions. Powder neutron di4raction, powder X-ray di4raction, magnetic susceptibility, magnetization, and speci5c heat measurements were carried out. It was found that the crystal phase transition and magnetic transition occurred at ca. 120 K and 24 K, respectively. The crystal structure below 120 K is monoclinic with space group C 2/c. Neutron di4raction data collected at 10 K show that Ba 3 NdRu 2 O 9 has a long-range ferromagnetic ordering of Nd 3؉ ions. The ordered magnetic moment of Nd 3؉ ions is 1.65(8) B . The direction of ordered moments is parallel to the c-axis.