ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System

Jiří Pospíšil; Yoshinori Haga; Kunihisa Nakajima; Norito Ishikawa; Ivana Císařová; Naoyuki Tateiwa; Etsuji Yamamoto; Tomoo Yamamura

doi:10.1016/j.ssc.2017.09.001

ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System

Materials Science 2017-09-21 v1

Authors: Jiří Pospíšil , Yoshinori Haga , Kunihisa Nakajima , Norito Ishikawa , Ivana Císařová , Naoyuki Tateiwa , Etsuji Yamamoto , Tomoo Yamamura

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Abstract

We have discovered a new compound of the composition ScPd2Al3 crystallizing in unknown structure type. Moreover, ScPd2Al3 reveals polymorphism. We have found an orthorhombic crystal structure at room temperature and a high temperature cubic phase. The polymorphic phases are separated by a reversible first order transition at 1053{\deg}C with a hysteresis of 19{\deg}C. ScPd2Al3 exists as a very stable intermetallic phase just in the vicinity of the icosahedral quasicrystal Tsai-type i-phase Al54Pd30Sc16.

Keywords

crystal growth and phase transitions phase transitions crystal structure and quasicrystals

Cite

@article{arxiv.1709.06843,
  title  = {ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System},
  author = {Jiří Pospíšil and Yoshinori Haga and Kunihisa Nakajima and Norito Ishikawa and Ivana Císařová and Naoyuki Tateiwa and Etsuji Yamamoto and Tomoo Yamamura},
  journal= {arXiv preprint arXiv:1709.06843},
  year   = {2017}
}

ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System

Abstract

Keywords

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