Magnetic and transport properties of the layered transition-metal pnictides R sub(3)T sub(4) As sub(4)O sub(2- delta ) (R = La, Ce, Pr, Nd, and Sm, T = Ni, Cu)

• Published in: Physical review. B, Condensed matter and materials physics Vol. 89; no. 9
• Main Authors: Wang, Jiakui K, Marcinkova, A, Chen, Chih-Wei, He, Hua, Aronson, Meigan, Morosan, E
• Format: Journal Article
• Language: English
• Published: 01-03-2014
• Subjects: Condensed matter; Copper; Magnetic properties; Neodymium; Nickel; Physical properties; Rare earth metals; Superconductivity; Transport properties
• ISSN: 1098-0121; 1550-235X

The magnetic and transport properties of the novel R sub(3)T sub(4)As sub(4)O sub(2- delta )s (R = La, Ce, Pr, Nd and Sm, T = Ni and Cu) layered materials were studied using structural and physical properties measurements. Varying the rare-earth ion led to the observation of diverse physical properties including superconductivity for R = La and T = Ni, ferromagnetic or antiferromagnetic order for R = Ce, Pr, and Sm, or spinglass behavior in Nd sub(3) Ni sub(4)As sub(4) O sub(2- delta ). These complex magnetic and electronic properties are discussed in light of the crystalline anisotropy in these layered compounds.