Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures
Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures
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高温下热电 Cu2S 的多重相变和结构振荡
DOI:
10.1016/j.ceramint.2018.04.127
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发表时间:
2018-08
影响因子:
5.2
通讯作者:
Lidong Chen
中科院分区:
文献类型:
--
作者:
Jialin Duan;Chenxi Zhu;Mengjia Guan;Ping Lu;Ying He;Zhengqian Fu;Linlin Zhang;Fangfang Xu;Xun Shi;Lidong Chen
The intrinsic ultra-low lattice thermal conductivity (κL) of high performance thermoelectric Cu2S may arise from its multiform complex crystal structures while the further sharp drop ofκLobserved at elevating temperatures close to the phase transition to hexagonal high-chalcocite is of considerable interest. In this work, in-depth in-situ transmission electron microscopy investigations have been performed by either heating or electron irradiation to analyze the structural evolution of Cu2S. Multiple including new phase structures have been observed in Cu2S. Upon increasing the temperature, drastic structural changes took place including phase transition among different phases, formation of an intermediate phase, switching of crystal orientation and inverse phase transitions, which indicate multiple forms of Cu ordering with high temperature-sensitivity. Such tremendous structural evolution along with formation and movement of phase boundaries are believed to strongly scatter the phonons.
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DOI:
10.1002/pssa.2210670138
发表时间:
1981-09
期刊:
Physica Status Solidi (a)
影响因子:
--
作者:
M. León;N. Terao;F. Rueda
通讯作者:
M. León;N. Terao;F. Rueda
影响因子:
27.8
作者:
Hazan, Eden;Ben-Yehuda, Ohad;Gelbstein, Yaniv
通讯作者:
Gelbstein, Yaniv
影响因子:
41.2
作者:
Liu, Huili;Shi, Xun;Snyder, G. Jeffrey
通讯作者:
Snyder, G. Jeffrey
影响因子:
64.8
作者:
Biswas, Kanishka;He, Jiaqing;Kanatzidis, Mercouri G.
通讯作者:
Kanatzidis, Mercouri G.
影响因子:
3.1
作者:
A. Putnis
通讯作者:
A. Putnis