TY - JOUR
T1 - Superconductivity of the partially ordered laves phase Mg2Ir2.3Ge1.7
AU - Kudo, Kazutaka
AU - Honda, Toshiaki
AU - Hiiragi, Hikaru
AU - Ota, Hiromi
AU - Nohara, Minoru
N1 - Funding Information:
Acknowledgment This work was partially supported by Grants-in-Aid for Scientific Research (JP15H05886, JP19K03748, JP19H05823), provided by the Japan Society for the Promotion of Science.
Publisher Copyright:
© 2020 Physical Society of Japan. All rights reserved.
PY - 2020/12/15
Y1 - 2020/12/15
N2 - A novel ternary Laves phase Mg2Ir2.3Ge1.7 was synthesized in this study. Single-crystal X-ray diffraction experiments confirmed a Mg2Cu3Si-type structure (P63=mmc, D46h, No. 194). The structure comprises a Mg hexagonal diamond, an Ir=Ge breathing Kagome network, and a Ge triangular networks; it is thus classified as a partially ordered Laves phase that is neither ordered nor disordered. This is in contrast to the isoelectronic Mg2Ir3Si with a fully ordered Laves phase structure. Magnetization and resistivity measurements show that bulk superconductivity occurs at 5.3 K in Mg2Ir2.3Ge1.7. The partially ordered phase is important because it forms a link between the disordered and ordered Laves phases. Moreover, our findings would provide an opportunity to study the effects of disorder on the breathing Kagome network.
AB - A novel ternary Laves phase Mg2Ir2.3Ge1.7 was synthesized in this study. Single-crystal X-ray diffraction experiments confirmed a Mg2Cu3Si-type structure (P63=mmc, D46h, No. 194). The structure comprises a Mg hexagonal diamond, an Ir=Ge breathing Kagome network, and a Ge triangular networks; it is thus classified as a partially ordered Laves phase that is neither ordered nor disordered. This is in contrast to the isoelectronic Mg2Ir3Si with a fully ordered Laves phase structure. Magnetization and resistivity measurements show that bulk superconductivity occurs at 5.3 K in Mg2Ir2.3Ge1.7. The partially ordered phase is important because it forms a link between the disordered and ordered Laves phases. Moreover, our findings would provide an opportunity to study the effects of disorder on the breathing Kagome network.
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U2 - 10.7566/JPSJ.89.123701
DO - 10.7566/JPSJ.89.123701
M3 - Article
AN - SCOPUS:85097021477
SN - 0031-9015
VL - 89
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 12
M1 - 123701
ER -