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Magnetic properties of electroplated wires coated by ferrofluid |
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| Authors: | H García-Miquel GV Kurlyandskaya VI Levit |
| Affiliation: | 1. E.T.S.I. Telecomunicacion, Universidad Politecnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain;2. Ural State University, Lenin Avenue 51, 620083, Ekaterinburg, Russia;3. Departamento de Electricidad y Electrónica, Universidad del País Vasco, UPV/EHU, P.O. Box 644, 48080, Bilbao, Spain;4. Cabot Thin Films, 1275 Kinnear Rd, Columbus, OH 43212-1155 USA |
| Abstract: | Low-frequency magnetic properties of ferromagnetic composite wires were studied with and without coating by ferrofluid. Non-magnetic CuBe wires of 0.1 mm diameter were electroplated with FeCoNi layer of 1 μm thickness. Magnetization curves were measured in the frequency range of 10 Hz–3 kHz. The composite CuBe/FeCoNi/ferrofluid material shows a hysteretic behaviour in a small field. The hysteresis loop of ferrofluid covered electroplated wire is not a simple sum of the ferrofluid “wire” plus non-covered wire signals. It indicates an interaction between magnetic wire and ferrofluid which can be revealed by low-frequency measurements. The combination “electroplated wire/ferrofluid” can be considered as a new type of composite magnetic material consisting of solid magnetic core coated by complementary liquid magnetic material. Low-frequency measurements in presence of ferrofluid can be a useful method to study magnetic properties of ferromagnets. |
| Keywords: | 75 50 Mm 75 50 Cc 75 70&minus i |
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