中国物理B ›› 2015, Vol. 24 ›› Issue (9): 96101-096101.doi: 10.1088/1674-1056/24/9/096101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Anomalous phase transition of InN nanowires under high pressure

汤顺熙a, 祝洪洋a, 江俊儒a, 武晓鑫a, 董蕴萱a, 张剑a, 杨大鹏b, 崔啟良a   

  1. a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    b College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130012, China
  • 收稿日期:2015-03-11 修回日期:2015-04-17 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 50772043, 51172087, and 11074089).

Anomalous phase transition of InN nanowires under high pressure

Tang Shun-Xi (汤顺熙)a, Zhu Hong-Yang (祝洪洋)a, Jiang Jun-Ru (江俊儒)a, Wu Xiao-Xin (武晓鑫)a, Dong Yun-Xuan (董蕴萱)a, Zhang Jian (张剑)a, Yang Da-Peng (杨大鹏)b, Cui Qi-Liang (崔啟良)a   

  1. a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    b College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130012, China
  • Received:2015-03-11 Revised:2015-04-17 Online:2015-09-05 Published:2015-09-05
  • Contact: Zhang Jian, Yang Da-Peng E-mail:zhang_jian@jlu.edu.cn;ydp@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 50772043, 51172087, and 11074089).

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摘要： Uniform InN nanowires were studied under pressures up to 35.5 GPa by using in situ synchrotron radiation x-ray diffraction technique at room temperature. An anomalous phase transition behavior has been discovered. Contrary to the results in the literature, which indicated that InN undergoes a fully reversible phase transition from the wurtzite structure to the rocksalt type structure, the InN nanowires in this study unusually showed a partially irreversible phase transition. The released sample contained the metastable rocksalt phase as well as the starting wurtzite one. The experimental findings of this study also reveal the potentiality of high pressure techniques to synthesize InN nanomaterials with the metastable rocksalt type structure, in addition to the generally obtained zincblende type one.

关键词: InN nanowire, phase transition, x-ray diffraction

Abstract: Uniform InN nanowires were studied under pressures up to 35.5 GPa by using in situ synchrotron radiation x-ray diffraction technique at room temperature. An anomalous phase transition behavior has been discovered. Contrary to the results in the literature, which indicated that InN undergoes a fully reversible phase transition from the wurtzite structure to the rocksalt type structure, the InN nanowires in this study unusually showed a partially irreversible phase transition. The released sample contained the metastable rocksalt phase as well as the starting wurtzite one. The experimental findings of this study also reveal the potentiality of high pressure techniques to synthesize InN nanomaterials with the metastable rocksalt type structure, in addition to the generally obtained zincblende type one.

Key words: InN nanowire, phase transition, x-ray diffraction

中图分类号:  (Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires))

  • 61.46.Km
61.50.Ks (Crystallographic aspects of phase transformations; pressure effects) 61.05.cp (X-ray diffraction)