Formation of magnetic clusters in paramagnetic nickel-copper alloys
- 1 July 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 10 (1), 287-304
- https://doi.org/10.1103/physrevb.10.287
Abstract
An itinerant-electron model with Coulomb exchange repulsion at random lattice sites is used to formulate conditions for local instability to occur and magnetic clusters to be formed. The cluster-moment distribution and average concentration of clusters are calculated and compared with values deduced from susceptibility measurements. A cluster critical temperature, above which no clusters exist, is defined. The critical nickel concentration for the onset of bulk ferromagnetism is correlated with a critical percolation density of the magnetic clusters. The specific-heat anomaly is also discussed.Keywords
This publication has 26 references indexed in Scilit:
- Anomalous Electrical Resistivity and the Existence of Giant Magnetic Moments in Ni-Cu AlloysPhysical Review Letters, 1970
- Observation of resistance minima in CuNi alloys near the critical concentration for ferromagnetismPhysics Letters A, 1970
- Electrical resistivity and magnetoresistance of paramagnetic Ni-Cu giant-moment alloysSolid State Communications, 1970
- Giant Moments in Paramagnetic Ni-Cu AlloysPhysical Review Letters, 1970
- Transition from Ferromagnetism to Paramagnetism in Ni–Cu AlloysJournal of Applied Physics, 1969
- Giant Moments in Ni-Cu Alloys Near the Critical CompositionPhysical Review Letters, 1969
- Electrons in transition metalsAdvances in Physics, 1964
- Band Theoretical Interpretation of Neutron Diffraction Phenomena in Ferromagnetic MetalsJournal of the Physics Society Japan, 1963
- Superparamagnetism, Nonrandomness, and Irradiation Effects in Cu-Ni AlloysPhysical Review B, 1959
- The spontaneous magnetization of nickel + copper alloysProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1958