Magnetic Properties of Spinel Cobalt–Manganese Ferrites
| Autor: | Dario Bueno-Baques, Anatoliy Glushchenko, R. Grössinger, Ronald F. Ziolo, Reiko Sato-Turtelli, José Andrés Matutes-Aquino, Veronica Corral-Flores |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Coprecipitation Spinel chemistry.chemical_element Magnetostriction Crystal structure Manganese engineering.material Magnetic hysteresis Electronic Optical and Magnetic Materials Magnetization Nuclear magnetic resonance chemistry engineering Electrical and Electronic Engineering Cobalt Nuclear chemistry |
| Zdroj: | IEEE Transactions on Magnetics. 51:1-4 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/tmag.2014.2357172 |
| Popis: | Cobalt ferrite (CoFe2O4) and manganese substituted cobalt ferrite (Co0,25Mn0,75Fe2O4) were synthesized by coprecipitation and sol–gel methods. X-ray diffraction revealed that manganese ions slightly enlarged the crystal lattice with respect to pure cobalt ferrite. Magnetization, linear magnetostriction, and piezomagnetic coefficient values tended to decrease with the ion substitution. Linear magnetostriction dropped from a value of −111.5 ppm for cobalt ferrite to values of −22.6 and −30.6 ppm for the substituted samples obtained from coprecipitation and sol–gel, respectively. The sample prepared by sol–gel technique resulted in a higher magnetization, magnetostriction, and piezomagnetic coefficient than that synthesized by coprecipitation method. |
| Databáze: | OpenAIRE |
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