Ln3Cu4P4O2: A New Lanthanide Transition Metal Pnictide Oxide Structure Type

✍ Scribed by R.J Cava; H.W Zandbergen; J.J Krajewski; T Siegrist; H.Y Hwang; B Batlogg

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 563 KB
• Volume: 129
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1996.7225

✦ Synopsis

A new type of lanthanide transition metal pnictide oxide, Ln 3 Cu 4 P 4 O 2 (for Ln ‫؍‬ La, Ce, and Nd), is reported. The crystal structure is made from Ln 2 O 2 layers of the Pb 2 O 2 type stacked with layers of Cu 2 P 2 tetrahedra and indicates the existence of a homologous series of compounds with similar chemistry connecting the BiCuOSe and ThCr 2 Si 2 structure types. The resistivity of La 3 Cu 4 P 4 O 2 is metallic, with no superconductivity observed above 2 K. The Ce and Nd compounds have magnetic susceptibilities characteristic of the trivalent Lanthanides. No magnetic ordering is observed above 4.2 K.