首页|Electronic transport evolution across the successive structural transitions in Ni50-xFexTi50 shape memory alloys

Electronic transport evolution across the successive structural transitions in Ni50-xFexTi50 shape memory alloys

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TiNi-based shape memory alloys have been extensively investigated due to their significant applications,but a compre-hensive understanding of the evolution of electronic structure and electrical transport in a system with martensitic transfor-mations(MT)is still lacking.In this work,we focused on the electronic transport behavior of three phases in Ni50-xFexTi50 across the MT.A phase diagram of Ni50-xFexTi50 was established based on x-ray diffraction,calorimetric,magnetic,and electrical measurements.To reveal the driving force of MT,phonon softening was revealed using first-principles calcula-tions.Notably,the transverse and longitudinal transport behavior changed significantly across the phase transition,which can be attributed to the reconstruction of electronic structures.This work promotes the understanding of phase transitions and demonstrates the sensitivity of electron transport to phase transition.

martensitic transformationelectronic behaviortransport propertiesfirst-principles calculations

何萍、杨金颖、任秋飒、王彬彬、吴光恒、刘恩克

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Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

School of Materials Science and Engineering,University of Science and Technology of Beijing,Beijing 100083,China

State Key Development Program for Basic Research of ChinaState Key Development Program for Basic Research of ChinaFundamental Science Center of the National Natural Science Foundation of ChinaStrategic Priority Research Program(B)of the Chinese Academy of Sciences(CAS)Synergetic Extreme Condition User Facility(SECUF)Scientific Instrument Developing Project of CAS

2019YFA07049002022YFA140380052088101XDB33000000ZD-KYYQ20210003

2024

10.1088/1674-1056/ad39d3

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(7)
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