Quaternary Germanides Formed in Molten Aluminum: Tb2NiAl4Ge2 and Ce2NiAl6-xGe4-y (x ∼ 0.24, y ∼ 1.34)Dedicated to Professor Welf Bronger on the Occasion of his 70th Birthday
Quaternary Germanides Formed in Molten Aluminum: Tb2NiAl4Ge2 and Ce2NiAl6-xGe4-y (x ∼ 0.24, y ∼ 1.34)Dedicated to Professor Welf Bronger on the Occasion of his 70th Birthday
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DOI：
10.1002/1521-3749(200207)628:7
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
B. Sieve;P. Trikalitis;M. Kanatzidis
中科院分区：
文献类型：
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作者：
B. Sieve;P. Trikalitis;M. Kanatzidis
在低于1000 °C的熔融Al中合成了金属间化合物相Tb_2NiAl_4Ge_2和Ce_2NiAl_6-x-Ge_4-y（x = 0.24，y = 1.34）。这两种化合物均为四元晶系，空间群为I4/mmm，晶胞参数分别为：Tb_2NiAl_4Ge_2 = 4.1346（2）Ac ~ 19.3437（7）A和Ce_2NiAl_6-xGe_4-y = 4.1951（9）A和c ~ 26.524（7）A。Tb_2NiAl_4Ge_2结构的特点是NiAl_4Ge_2层被双层稀土离子隔开。Ce 2NiAl 6-xGe 4-y（x 0.24，y 1.34）结构也包含NiAl 4 Ge 2层沿着空位缺陷PbO型Al 2-xGe 2-y层，与Ce 2NiGa 10结构类型有关。
The intermetallic phases Tb2NiAl4Ge2 and Ce2NiAl6-x- Ge4-y (x 0.24, y 1.34) were synthesized in molten Al at tem- peratures below 1000 °C. Both compounds adopt the tetragonal space group I4/mmm with cell parameters of a 4.1346(2) Ac 19.3437(7) Afor Tb2NiAl4Ge2 and a 4.1951(9) Aand c 26.524(7) Afor Ce2NiAl6-xGe4-y. The Tb2NiAl4Ge2 structure fea- tures NiAl4Ge2 layers separated by a double layer of rare earth ions. The Ce2NiAl6-xGe4-y (x 0.24, y 1.34) structure also con- tains the NiAl4Ge2 layers along with a vacancy defect PbO-type Al2-xGe2-y layer, and is related to the Ce2NiGa10 structure type.