The low number of physical parameters for superconductivity has motivated researchers to perform bulk measurements in YRh 4 B 4 , discovered four decades ago, with superconducting transition temperature ( ##IMG## [http://ej.iop.org/images/0953-2048/33/12/125006/sustabbb18ieqn1.gif] {$T_{\textrm{c}}$} ) of approximately 11 K. We performed electrical resistivity, magnetic susceptibility, and specific heat measurements to investigate the superconducting properties of the ternary borides YRh 4 B 4 with CeCo 4 B 4 -type tetragonal structure. The nearly single-phase YRh 4 B 4 had a moderately high ##IMG## [http://ej.iop.org/images/0953-2048/33/12/125006/sustabbb18ieqn2.gif] {$T_{\textrm{c}}$} of 10.6 K. The lower and upper critical fields were determined to be 1.5 and 32 kOe, respectively, by magnetic susceptibility and electrical resistivity measurements. The Ginzburg-L...

中文翻译：

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三元硼化物YRh 4 B 4的超导性质

超导电性的物理参数数量很少，促使研究人员在四十年前发现的具有超导转变温度的YRh 4 B 4中进行体积测量（## IMG ## [http://ej.iop.org/images/0953 -2048 / 33/12/125006 / sustabbb18ieqn1.gif] {$ T _ {\ textrm {c}} $}）约为11K。我们进行了电阻率，磁化率和比热测量，以研究其超导性能。具有CeCo 4 B 4型四方结构的三元硼化物YRh 4 B 4。几乎单相的YRh 4 B 4具有中等高的## IMG ## [http://ej.iop.org/images/0953-2048/33/12/125006/sustabbb18ieqn2.gif] {$ T _ {\ textrm {c}} $}为10.6K。确定下限和上限临界场分别为1.5和32 kOe，通过磁化率和电阻率测量。金茨堡-L ...