The ternary Laves phases Sr2Pd3Sn, Eu2Pd3Sn and Eu2Pd3In were synthesized by induction melting of the elements in sealed tantalum ampoules. The polycrystalline products were characterized through their powder X-ray diffraction patterns. The structure of Eu2Pd3Sn was refined from single crystal X-ray diffractometer data: Mg2MnGa3 type, Cmcm, a = 583.36(5), b = 908.31(7), c = 958.06(8) pm, wR2 = 0.0366, 557 F 2 values, 23 variables. The palladium and tin atoms show the inverse coloring on the network of condensed tetrahedra of Mg2MnGa3, i.e., MnGa3 versus Pd3Sn. Refinement of the occupancy parameters revealed small defects for the europium site, leading to composition Eu1.962(6)Pd3Sn for the studied crystal. Sr2Pd3Sn is a Pauli paramagnet and Eu2Pd3Sn shows Curie-Weiss paramagnetism (7.86(1) µB Eu atom−1 and Θ P = 48.1(1) K). Ferromagnetic ordering is observed below T C = 46.1(1) K. The 119Sn and 151Eu Mössbauer spectra of Sr2Pd3Sn and Eu2Pd3Sn are discussed with respect to electron density changes as a function of the tin content and the ionicity in the sequence of the stannides Sr2Pd3Sn/Eu2Pd3Sn → Sr2Pd2Sn/Eu2Pd2Sn → EuPdSn → EuPdSn2.

中文翻译：

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三元正交 Laves 相 Sr2Pd3Sn、Eu2Pd3Sn 和 Eu2Pd3In

三元 Laves 相 Sr2个钯3个锡、欧盟2个钯3个锡和欧盟2个钯3个In 是通过在密封的钽安瓿中感应熔化元素而合成的。多晶产品通过其粉末 X 射线衍射图进行表征。欧盟的结构2个钯3个Sn 由单晶精制 X 射线衍射仪数据：Mg2个锰镓3个类型，厘米厘米,A= 583.36(5),b= 908.31(7),C= 958.06(8) 下午，wR2 = 0.0366, 557F 2个值，23 个变量。钯和锡原子在 Mg 的凝聚四面体网络上显示出反色2个锰镓3个, 即锰镓3个对钯3个锡。对占据参数的细化揭示了铕位置的小缺陷，导致组成 Eu1.962(6)钯3个Sn 代表所研究的晶体。锶2个钯3个Sn 是泡利顺磁体，Eu2个钯3个Sn 显示 Curie-Weiss 顺磁性 (7.86(1) µ乙欧盟原子−1和Θ P= 48.1(1) K)。下面观察到铁磁有序吨 C= 46.1(1) K。119锡和151Sr 的 Eu 穆斯堡尔谱2个钯3个锡和欧盟2个钯3个Sn 讨论了电子密度变化作为锡含量和锡化物 Sr 序列中离子度的函数2个钯3个锡/欧盟2个钯3个锡 → 锶2个钯2个锡/欧盟2个钯2个Sn → EuPdSn → EuPdSn2个.