The Magnetic Susceptibilities of Lanthanum, Cerium, Praseodymium, Neodymium and Samarium, from 1.5 K to 300 K
- 1 June 1957
- journal article
- Published by IOP Publishing in Proceedings of the Physical Society. Section B
- Vol. 70 (6) , 566-576
- https://doi.org/10.1088/0370-1301/70/6/304
Abstract
The magnetic susceptibilities of the rare-earth metals lanthanum, cerium, praseodymium, neodymium and samarium have been measured over the temperature range 1.5°K to 300°K. Low temperature anomalies correlating with recent specific heat measurements have been found in cerium, neodymium and samarium at temperatures of 12.5°K, 7.5°K and 14.8°K respectively, and it is believed that these metals become anti-ferromagnetic below these temperatures. At higher temperatures the susceptibilities of cerium and praseodymium obey the Curie-Weiss law, with effective atomic moments of 2.51 and 3 56 Bohr magnetons respectively. Neodymium obeys a law of the form χ = C/(T − θ) + K, where the Curie constant C indicates an effective atomic moment of 3.3 Bohr magnetons (μB). These moments are in fair agreement with the values expected for the trivalent ions of the elements, assuming Russell-Saunders coupling of the orbital and spin moments of the 4f electrons.Keywords
This publication has 7 references indexed in Scilit:
- The Atomic Heat of Cerium between 1.5 and 20 KProceedings of the Physical Society. Section B, 1957
- The Atomic Heat of Samarium from 2 to 20 KProceedings of the Physical Society. Section B, 1957
- The Magnetic Susceptibility of Metallic NeodymiumProceedings of the Physical Society. Section B, 1955
- The Magnetic Susceptibility of Nd MetalPhysical Review B, 1954
- On the Exchange Interaction in the Collective Electron ApproximationProceedings of the Physical Society. Section A, 1954
- The atomic heats of the rare-earth elementsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951
- The Energy of the Hydrogen MoleculeThe Journal of Chemical Physics, 1950