Feature of ferromagnetic or ferrimagnetic materials
Thermomagnetic susceptibility curve for magnetite exhibiting a strong Hopkinson effect
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The Hopkinson effect is a feature of ferromagnetic or ferrimagnetic materials, in which an increase in magnetic susceptibility is observed at temperatures between the blocking temperature and the Curie temperature of the material. The Hopkinson effect can be observed as a peak in thermomagnetic curves that immediately precedes the susceptibility drop associated with the Curie temperature. It was first observed by John Hopkinson in 1889 in a study on iron.[1]
In single domain particles, a large Hopkinson peak results from a transient superparamagnetic particle domain state.
^Hopkinson, John. “Magnetic and Other Physical Properties of Iron at a High Temperature”. Philosophical Transactions of the Royal Society of London. A 180 (1889): 443–465.
The Hopkinsoneffect is a feature of ferromagnetic or ferrimagnetic materials, in which an increase in magnetic susceptibility is observed at temperatures...
John Hopkinson, FRS, (27 July 1849 – 27 August 1898) was a British physicist, electrical engineer, Fellow of the Royal Society and President of the IEE...
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Relation of magnetization to applied magnetic field and temperature Hopkinsoneffect – Feature of ferromagnetic or ferrimagnetic materials Pierre Curie...
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the relation of strain to stress". British Association Reports: 502. Hopkinson, B.; Williams, G. T. (1912). "The Elastic Hysteresis of Steel". Proceedings...
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Unholy War, p. 316. Hopkinson 2004, pp. 79–83. Hopkinson 2004, pp. 83–86. Hopkinson 2004, p. 86. Hopkinson 2004, p. 85. Hopkinson 2004, pp. 83–87. for...
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names: authors list (link) Hopkinson, Neil (2018). Quintus Smyrnaeus. Posthomerica. harvard University Press. p. 11. Hopkinson, Neil (2018). Quintus Smyrnaeus...
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