Neutron diffraction study on PrMn2−xFexGe2 and general magnetic phase diagram for RMn2−xFexGe2 (R: La–Sm)
作者： I. Dincer , A. Elmali , Y. Elerman , H. Ehrenberg , H. Fuess
DOI: 10.1016/J.JALLCOM.2005.08.027
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摘要: Abstract We have investigated the magnetic structures and phase transitions of PrMn2−xFexGe2 (0 ≤ x ≤ 1) by temperature dependence weak-field magnetization powder neutron diffraction. For x = 0.6 sample, a typical SmMn2Ge2-like behavior is observed. The samples with x = 0.6, 0.8 1 been determined between 1.5 305 K. Above T C inter (x = 0.6) N (x = 0.8 1) up to , these exhibit an intralayer antiferromagnetic structure in (0 0 1) Mn planes. canted ferromagnetic along c-axis below Pr . x = 0.8 1, moments order ferromagnetically for sample results are summarized diagram. general diagram RMn2−xFexGe2 (R: La, Ce, Pr, Nd Sm) also constructed from previous present works. compounds, transition occurs at different Mn–Mn distances each system. These critical larger than corresponding threshold value d – = 2.87 A ternary end-member RMn2X2 compounds.
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