Please use this identifier to cite or link to this item:
Title: Structural and magnetic properties of RTiNO2 (R=Ce, Pr, Nd) perovskite nitride oxides
Authors: Porter, SH
Huang, ZG
Cheng, ZX
Avdeev, M
Chen, ZX
Dou, SX
Woodward, PM
Keywords: Perovskites
Rare earths
Neutron diffraction
Orthorhombic lattices
Magnetic moments
L-S coupling
Crystal field
Transition elements
Issue Date: 1-Mar-2015
Publisher: Elsevier
Citation: Porter, S. H., Huang, Z., Cheng, Z., Avdeev, M., Chen, Z., Dou, S., Woodward, P. M. (2015). Structural and magnetic properties of RTiNO2 (R=Ce, Pr, Nd) perovskite nitride oxides. Journal of Solid State Chemistry, 226, 279-285. doi:10.1016/j.jssc.2015.01.023
Abstract: Neutron powder diffraction indicates that CeTiNO2 and PrTiNO2 crystallize with orthorhombic Pnma symmetry (Ce: a=5.5580(5), b=7.8369(7), and c=5.5830(4) Å; Pr: a=5.5468(5), b=7.8142(5), and c=5.5514(5) Å) as a result of a–b+a– tilting of the titanium-centered octahedra. Careful examination of the NPD data, confirms the absence of long range anion order in both compounds, while apparent superstructure reflections seen in electron diffraction patterns provide evidence for short range anion order. Inverse magnetic susceptibility plots reveal that the RTiNO2 (R=Ce, Pr, Nd) compounds are paramagnetic with Weiss constants that vary from −28 to −42 K. Effective magnetic moments for RTiNO2 (R=Ce, Pr, Nd) are 2.43 μB, 3.63 μB, and 3.47 μB, respectively, in line with values expected for free rare-earth ions. Deviations from Curie–Weiss behavior that occur below 150 K for CeTiNO2 and below 30 K for NdTiNO2 are driven by magnetic anisotropy, spin–orbit coupling, and crystal field effects. © 2015 Elsevier Inc.
ISSN: 0022-4596
Appears in Collections:Journal Articles

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.