396:
379:, and is assumed in some models to represent the lowest-energy state for a given field. There are several ways for experimental measurement of the anhysteretic magnetization curve, based on fluxmeters and DC biased demagnetization. ARM has also been studied because of its similarity to the write process in some magnetic recording technology and to the acquisition of
117:
598:
792:
292:
Another kind of IRM can be obtained by first giving the magnet a saturation remanence in one direction and then applying and removing a magnetic field in the opposite direction. This is called
371:. This is induced by exposing a magnet to a large alternating field plus a small DC bias field. The amplitude of the alternating field is gradually reduced to zero to get an
248:
Often a single measure of remanence does not provide adequate information on a magnet. For example, magnetic tapes contain a large number of small magnetic particles (see
1003:
375:, and then the bias field is removed to get the remanence. The anhysteretic magnetization curve is often close to an average of the two branches of the
159:
The default definition of magnetic remanence is the magnetization remaining in zero field after a large magnetic field is applied (enough to achieve
53:
is removed. Colloquially, when a magnet is "magnetized", it has remanence. The remanence of magnetic materials provides the magnetic memory in
973:
McCurrie, R. A.; Gaunt, P. (1966). "The magnetic properties of platinum cobalt near the equiatomic composition part I. the experimental data".
820:
776:
61:. The word remanence is from remanent + -ence, meaning "that which remains". The origins of remanence originate from some point after 1850.
1091:
Pfeiffer, H. (1990). "Determination of anisotropy field distribution in particle assemblies taking into account thermal fluctuations".
325:
of the field. Yet another kind of remanence can be obtained by demagnetizing the saturation remanence in an ac field. This is called
1120:
Wohlfarth, E. P. (1958). "Relations between different modes of acquisition of the remanent magnetization of ferromagnetic particles".
905:
882:
840:
Banerjee, S. K.; Mellema, J. P. (1974). "A new method for the determination of paleointensity from the A.R.M. properties of rocks".
256:). One way to look inside these materials is to add or subtract small increments of remanence. One way of doing this is first
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252:), and these particles are not identical. Magnetic minerals in rocks may have a wide range of magnetic properties (see
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Strictly speaking, it is still in the Earth's field, but that has little effect on the remanence of a
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Jaep, W. F. (1969). "Anhysteretic magnetization of an assembly of single-domain particles".
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after the current in the coil is turned off. Where it is unwanted, it can be removed by
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devices, and is used as a source of information on the past Earth's magnetic field in
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192:. If it must be distinguished from other kinds of remanence, then it is called the
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84:) as it is an unwanted contamination, for example, a magnetization remaining in an
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228:. This value of remanence is one of the most important parameters characterizing
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In engineering applications the residual magnetization is often measured using a
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1040:"Anhysteretic Magnetization Measurement Methods for Soft Magnetic Materials"
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Jiles, D. C.; Atherton, D. L. (1986). "Theory of ferromagnetic hysteresis".
575:"remanence | Origin and meaning of remanence by Online Etymology Dictionary"
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If the particles are noninteracting single-domain particles with uniaxial
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This article is about magnetic remanence. For the data storage term, see
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Fitzgerald, A.E.; Kingsley, Charles Jr.; Umans, Stephen D. (2003).
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divided by the volume of the sample) and denoted in equations as
171:; and the zero-field intercept is a measure of the remanence. In
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46:
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232:; it measures the strongest magnetic field they can produce.
355:, there are simple linear relations between the remanences.
236:, for example, have a remanence approximately equal to 1.3
765:
Juha Pyrhönen; Tapani
Jokinen; Valéria Hrabovcová (2009).
80:
a large residual magnetization is not desirable (see also
167:
is measured using instruments such as a vibrating sample
407:
760:
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599:"5.01.3.1 Early Observation of the Remanence of Rocks"
260:
the magnet in an AC field, and then applying a field
68:is generally used in engineering applications. In
815:(6th ed.). McGraw-Hill. pp. 688 pages.
793:"COBALT: Essential to High Performance Magnetics"
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1157:Coercivity and Remanence in Permanent Magnets
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266:and removing it. This remanence, denoted by
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1004:"Some theoretical aspects of rock magnetism"
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331:alternating field demagnetization remanence
127:loops for grain-oriented electrical steel (
99:is used for remanence measured in units of
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281:), depends on the field. It is called the
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369:anhysteretic remanent magnetization (ARM)
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363:Another kind of laboratory remanence is
175:this measure is converted to an average
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287:isothermal remanent magnetization (IRM)
16:Magnetization left behind in a material
768:Design of Rotating Electrical Machines
457:0.82–1.16 T (8,200–11,600 G)
198:saturation isothermal remanence (SIRM)
798:. Arnold Magnetic Technologies. 2012.
7:
771:. John Wiley and Sons. p. 232.
717:
662:
623:"Magnetic Tape Storage and Handling"
494:0.9–1.4 T (9,000–14,000 G)
482:1–1.3 T (10,000–13,000 G)
14:
873:. AN IEEE Press Classic Reissue.
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333:and is denoted by symbols like
300:and is denoted by symbols like
529:Viscous remanent magnetization
381:natural remanent magnetization
1:
869:Bozorth, Richard M. (1993) .
966:10.1016/0304-8853(86)90066-1
862:10.1016/0012-821X(74)90190-3
743:. Hill Technical Sales. 2006
524:Thermoremanent magnetization
327:AC demagnetization remanence
298:DC demagnetization remanence
163:). The effect of a magnetic
729:Banerjee & Mellema 1974
470:1.28 T (12,800 G)
1205:
892:Chikazumi, SĹŤshin (1997).
741:"Amorphous Magnetic Cores"
445:0.35 T (3,500 G)
373:anhysteretic magnetization
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1031:10.1080/00018735500101204
995:10.1080/14786436608212648
894:Physics of Ferromagnetism
696:Jiles & Atherton 1986
652:McCurrie & Gaunt 1966
294:demagnetization remanence
1113:10.1002/pssa.2211180133
854:1974E&PSL..23..177B
842:Earth Planet. Sci. Lett
453:Samarium-cobalt magnet
365:anhysteretic remanence
359:Anhysteretic remanence
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66:residual magnetization
31:remanent magnetization
1093:Physica Status Solidi
603:www.sciencedirect.com
119:
101:magnetic flux density
64:The equivalent term
1177:Computer engineering
1038:Nowicki, M. (2018).
1002:NĂ©el, Louis (1955).
946:J. Magn. Magn. Mater
244:Isothermal remanence
194:saturation remanence
112:Saturation remanence
49:) after an external
1187:Magnetic hysteresis
1134:1958JAP....29..595W
1105:1990PSSAR.118..295P
1056:2018Mate...11.2021N
1023:1955AdPhy...4..191N
987:1966PMag...13..567M
958:1986JMMM...61...48J
929:1969JAP....40.1297J
95:Sometimes the term
1065:10.3390/ma11102021
812:Electric Machinery
579:www.etymonline.com
406:. You can help by
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45:material (such as
35:residual magnetism
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937:10.1063/1.1657638
822:978-0-07-366009-7
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435:References
179:(the total
97:retentivity
1171:Categories
1162:Magnet Man
833:References
747:18 January
608:2024-08-02
584:2020-01-20
514:Hysteresis
509:Coercivity
383:in rocks.
353:anisotropy
161:saturation
152:coercivity
125:hysteresis
90:degaussing
78:generators
1044:Materials
1011:Adv. Phys
975:Phil. Mag
718:Jaep 1969
663:NĂ©el 1955
432:Remanence
323:magnitude
315:), where
138:remanence
27:Remanence
1084:30340358
503:See also
429:Material
387:Examples
136:denotes
1130:Bibcode
1101:Bibcode
1075:6213293
1052:Bibcode
1019:Bibcode
983:Bibcode
954:Bibcode
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321:is the
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121:Fig. 1
1007:(PDF)
796:(PDF)
535:Notes
238:Tesla
107:Types
1080:PMID
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879:ISBN
817:ISBN
773:ISBN
749:2014
140:and
76:and
47:iron
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