Influence of partial rare-earth substitution for Sm in the giant intrinsic magnetic hardness compound SmCo2Ni3 |
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Authors: | H Oesterreicher F T Parker M Misroch |
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Institution: | 1. Department of Chemistry, University of California, San Diego, 92093, La Jolla, CA, USA
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Abstract: | The phenomenon of giant intrinsic magnetic hardness is investigated in compounds R1?x Sm x Co2Ni3 with R=Y, Pr, Gd, Tb, Er. Partial Er substitution for Sm actually increases magnetic hardness while all other substitutions decrease magnetic hardness. The strength of coercivity is thus dependent on both the sign and magnitude of the crystal field interaction. The temperature dependence of coercivity is complex in the case of Pr substitution as a result of competing effects from thermal activation and a decrease in anisotropy at low temperatures. |
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