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Manganin is a trademarked name for an alloy of typically 84.2% copper, 12.1% manganese, and 3.7% nickel. It was first developed by Edward Weston in 1892, improving upon his Constantan (1887). Manganin foil and wire is used in the manufacture of resistors , particularly ammeter shunts , because of its virtually zero temperature coefficient of ...
As quoted in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition.CRC Press. Boca Raton, Florida, 2003; Section 4, Properties of the Elements and Inorganic Compounds; Physical Properties of the Rare Earth Metals
Electrical resistivity: 1.44 µΩ⋅m (at 20 °C) Magnetic ordering: paramagnetic : ... Manganese is a chemical element; it has symbol Mn and atomic number 25.
Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current.
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However, the double exchange model did not adequately explain the high insulating-like resistivity above the transition temperature. [11] In the 1990s, work by R. von Helmolt et al. [12] and Jin et al. [13] initiated a large number of further studies. Although there is still no complete understanding of the phenomenon, there is a variety of ...
Manganese-zinc ferrite (MnZn, with the formula Mn a Zn (1−a) Fe 2 O 4). MnZn have higher permeability and saturation levels than NiZn. Nickel-zinc ferrite (NiZn, with the formula Ni a Zn (1−a) Fe 2 O 4). NiZn ferrites exhibit higher resistivity than MnZn, and are therefore more suitable for frequencies above 1 MHz.
Manganese and aluminum can be added up to 0.5%. [1] Silicon increases the electrical resistivity of iron by a factor of about 5; this change decreases the induced eddy currents and narrows the hysteresis loop of the material, thus lowering the core loss by about three times compared to conventional steel.