B.R. Coles
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View article: The origin of the molecular field in ferromagnets
The origin of the molecular field in ferromagnets Open
Since students find it difficult to follow the discussions of ferromagnetism based on the exchange integral (J) that appears in the Heitler–London treatment of the hydrogen molecule, partly because there it clearly favors antiparallel spin…
View article: An electron paramagnetic resonance study of the heavy-fermion system
An electron paramagnetic resonance study of the heavy-fermion system Open
Gd EPR measurements on the heavy-fermion system are reported. In agreement with NMR results, we observe a heavy-fermion behaviour for and the opening of a spin gap below . Our data reveal an almost constant dynamical susceptibility for , f…
View article: On the interesting magnetic behaviour of UFe2, CeFe2 and their pseudobinary compounds
On the interesting magnetic behaviour of UFe2, CeFe2 and their pseudobinary compounds Open
New results for the magnetic properties of U (Fe, Al )2, (U, Ce )Fe2, and for the effects of U substitution for Ce on the anomalous behaviour of some Ce (Fe, X)2 alloys (where X = Co or Al) make possible a comparison of the roles of U and …
View article: EFFECTS OF ALLOYING ON THE MAGNETIC AND STRUCTURAL BEHAVIOUR OF CeFe<sub>2</sub>
EFFECTS OF ALLOYING ON THE MAGNETIC AND STRUCTURAL BEHAVIOUR OF CeFe<sub>2</sub> Open
Considerable attention has been given to the Laves phase compounds XFe2. Two main groups are (a) those where X is a magnetic rare earth element and (b) those where X is non-magnetic and from groups III, IV or V (e.g. Y, Zr, Nb, etc.). In m…
View article: The structure and properties of the alloy Cu2MnIn
The structure and properties of the alloy Cu2MnIn Open
The ferromagnetic Heusler alloy Cu2MnAl has a body-centred cubic structure with an ordered arrangement of the atoms. Considerations of valency and atomic diameters suggested that if the aluminium were replaced by indium the superlattice wo…