Structural and magnetic characteristics of the pseudobinary system PrMn2ErMn2
作者： H. Oesterreicher
DOI: 10.1016/0022-5088(71)90003-8
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摘要: Abstract Alloys were prepared by induction melting and subsequent annealing at 950 °K. Replacement of Er Pr in ErMn 2 results increasing lattice parameters the hexagonal MgZn -type structure. From 0.283 0.05 Mn 0.667 to 0.163 0.17 −Mn alloys crystallize with a cubic face-centered structure from 12.308 12.601 A, isotypical Th 6 23 (G-phase). This is also (TmPr)Mn . PrMn crystallizes as α-Mn type (χ-phase), body-centered cubic, = 8.902 A °K, G-phase 12.690 1000 In liquid He range, magnetic moments align antiferromagne-tically High saturation 4.2 °K phase suggest complex behavior. These show two Curie temperatures around 60 ° 420 remain ferromagnetic above room temperature. Neutron diffraction 300 does not reveal antiferromagnetic ordering within crystallographic sites. Some kind order may be retained beyond The compounds do follow Curie-Weiss law PrMn2 (χ-phase) has Weiss constant —80 antiferromagnetically below on
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