Journal of Applied Physics · 1990 · 23 citations · 5 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMaterials ChemistryMetallurgyFerromagnetic MaterialsFerromagnetismMagnetic CharacterizationMagnetic Properties Of SolidsMagnetization ProcessesPermanent MagnetsMagnetic PropertiesMagnetization Versus TemperatureMaximum Energy ProductSaturationSaturation MagnetizationTemperature Dependence Of Magnetic PropertiesTemperature Dependence Of MagnetizationTemperature-dependent Magnetization
Computer programs have been developed to predict temperature coefficients of saturation magnetization for (Sm1−xGdx)2Tm17 magnets with higher Fe content from temperature-dependent magnetic properties of single rare-earth compositions. Very good agreement was obtained between the calculated and measured data. The composition Sm0.54Gd0.46 (Co0.63Fe0.29Cu0.06Zr0.02)7.69 exhibits a nearly zero temperature coefficient of magnetization from −60 to 150 °C. Its maximum energy product remains 16–17 MGOe in the temperature range of 20–200 °C. A room-temperature energy product of 19 MGOe was attained for the composition Sm0.55Gd0.45(Co0.608Fe0.316Zr0.02)7.72.
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