Synthesis, characterization, and Mgnetic properties of the new boride solid solutions M_(0.5)Ru_(6.5)B_3 (M = Cr, Mn, Co, Ni)

Misse P.R.N.; Fokwa B.P.T.

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Synthesis, characterization, and Mgnetic properties of the new boride solid solutions M_(0.5)Ru_(6.5)B_3 (M = Cr, Mn, Co, Ni)

机译：新型硼化物固溶体M_（0.5）Ru_（6.5）B_3（M = Cr，Mn，Co，Ni）的合成，表征和动力学性质

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Powder samples and single crystals of the borides M_(0.5)Ru _(6.5)B_3 (M= Cr, Mn, Co, Ni) were synthesized by arc-melting the elements in a water-cooled copper crucible under argon. The new phases were structurally characterized by single-crystal and powder Xray diffraction as well as EDX-Analyses. They crystallize in the hexagonal Th_7Fe_3 structure type (space group P6_3ync, no. 186, Z= 2) and a pronounced site preferential M/Ru substitution is observed. Magnetic properties of the compounds were investigated and Pauli paramagnetism was observed in all cases. However, a strong temperature dependency is subsequently observed in Mn _(0.5)Ru_(6.5)B_3 below 250 K, but no hint of magnetic ordering was found.

机译：硼化物M_（0.5）Ru _（6.5）B_3（M = Cr，Mn，Co，Ni）的粉末样品和单晶是通过在氩气下将元素在水冷式铜坩埚中电弧熔化而合成的。通过单晶和粉末X射线衍射以及EDX分析对新相进行结构表征。它们结晶成六角形的Th_7Fe_3结构类型（空间群P6_3ync，编号186，Z = 2），并且观察到明显的位点优先M / Ru取代。研究了化合物的磁性，并在所有情况下均观察到了保利顺磁性。然而，随后在低于250 K的Mn _（0.5）Ru_（6.5）B_3中观察到强烈的温度依赖性，但未发现磁性有序的迹象。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2010年第6期|共5页
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Misse P.R.N.; Fokwa B.P.T.;
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正文语种 eng
中图分类化学;
关键词
Bron; Mnetic propertiesT_7fe _3-type; Rhenium; Tnsition metal borides;

机译：硼;力学性能T_7fe _3型;R;三价金属硼化物;

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Synthesis, characterization, and Mgnetic properties of the new boride solid solutions M_(0.5)Ru_(6.5)B_3 (M = Cr, Mn, Co, Ni)

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