NDLI: Magnetism and anomalous properties of plutonium

Content Provider	Springer Nature Link
Author	Solontsov, A. Z. Orlov, V. K. Kiselev, S. A. Burmistrov, A. A.
Copyright Year	2009
Abstract	It is shown that because of their high magnetic susceptibility δ plutonium and its alloys are close to magnetic instabilities; dynamic effects of short-range magnetic order which are associated with the fluctuating magnetization density of electrons – spin fluctuations – play a large role in them. Long-range ferro- and antiferromagnetic order is suppressed. A model is developed for the spin fluctuations in plutonium. In this model, because of strong magneto-elastic coupling the spin-fluctuation energy depends on the volume of the crystal and is independent of temperature and spatial dispersion. It is shown that the contribution of the zero-point quantum spin-fluctuations is largely temperature-independent, as a result of which saturation of local magnetic moments is absent, the Curie–Weiss law for the magnetic susceptibility breaks down, and below the melting temperature plutonium is a strongly quantum system. An explanation is given for the thermal expansion anomalies of the δ phase of plutonium and its alloys on the basis of the theory of magneto-volume effect with a negative magneto-elastic coupling constant.
Starting Page	263
Ending Page	271
Page Count	9
File Format	PDF
ISSN	10634258
Journal	Atomic Energy
Volume Number	107
Issue Number	4
e-ISSN	15738205
Language	English
Publisher	Springer US
Publisher Date	2010-02-04
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nuclear Chemistry Nuclear Engineering Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear Energy and Engineering

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