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Magnetic properties of dispersed magnetite powders
Abstract
Measurements have been made of coercive force, susceptibility, isothermal remanence, thermoremanence and thermal and alternating field demagnetization of annealed magnetite powders in nine size ranges from 1·5 μ to 120 μ. The samples were dispersed in plaster to occupy a few per cent by volume of the specimens and thus to simulate the magnetic properties of rocks. The results are compared with the theories of rock magnetism. Susceptibility agrees precisely with theory and saturation remanence has the same dependence on coercive force as the theory. The observed values of thermoremanence are smaller than expected but show a size dependence consistent with the predicted appearance of pseudo-single domain effects at small grain size.
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Citations
Cited by
Hysteresis properties of titanomagnetites: Grain-size and compositional dependence
Day, R., Fuller, M., & Schmidt, V. A. (1977) · Physics of The Earth and Planetary Interiors · doi:10.1016/0031-9201(77)90108-x · Cited by 2,881
Dunlop, D. J. (2002) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2001jb000486 · Cited by 1,354
King, J., Banerjee, S. K., Marvin, J., & Özdemir, Ö. (1982) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(82)90142-x · Cited by 768
Superparamagnetic and single-domain threshold sizes in magnetite
Dunlop, D. J. (1973) · Journal of Geophysical Research · doi:10.1029/jb078i011p01780 · Cited by 358
Magnetic properties of variably serpentinized abyssal peridotites
Oufi, O., Cannat, M., & Horen, H. (2002) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2001jb000549 · Cited by 256
Metadata
- Authors
- Parry, L. G.
- Venue
- Philosophical Magazine
- Publisher
- Informa UK Limited
- Published
- 1965-02
- Volume
- 11
- Issue
- 110
- Pages
- 303-312
- ISSN
- 0031-8086 (ISSN-L)
- OpenAlex
- W2097196662
- Cited by
- 210
- References
- 0
- FWCI
- 1.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- Parry, L. G. (1965). Magnetic properties of dispersed magnetite powders. Philosophical Magazine. https://doi.org/10.1080/14786436508221858
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