Magnetic behavior of Pr1 − xMxCo5 compounds (M = Ti, Zr and Hf) |
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Authors: | H O Gupta W E Wallace |
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Institution: | Carnegie-Mellon University, Pittsburgh, PA 15213, USA University of Pittsburgh, Pittsburgh, PA 15260, USA |
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Abstract: | Magnetic characteristics of Ti-, Zr- and Hf-substituted PrCo5 alloys have been studied over the temperature range from 77 to 300 K and for applied fields up to 20 kOe. It is established that Ti, Zr and Hf substitute for Pr. Single-phase materials are formed for all values of x up to 0.2 in the system Pr1?xZrxCo5 but for x only up to 0.1 for Pr1?xTix Co5 and Pr1?xHfxCo5 alloys. Larger amounts of Zr can be substituted if the material is made hyperstoichiometric in Co, e.g., Pr0.7Zr0.3Co5.5. All the alloys show a decrease in magnetic moment and an increase in Curie temperature as x increases. Anisotropy fields decrease as x increases at 295 K. Anomalous behavior is observed at 77 K, suggested that these ternary alloys may have a cone structure at this temperature. |
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