CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Reversible devitrification in amorphous As2Se3 under pressure
Ahmad, AS; Lou, HB; Lin, CL; Li, AG; Yang, K; Glazyrin, K; Liermann, HP; Franz, H; Stahl, K; Cui, S; Bureau, B; Zhang, DX; Wang, XD; Cao, QP; Greer, AL; Jiang, JZ; Jiang, JZ (reprint author), Zhejiang Univ, Sch Mat Sci & Engn, Int Ctr New Struct Mat, Hangzhou 310027, Peoples R China.; Jiang, JZ (reprint author), Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Lab New Struct Mat, Hangzhou 310027, Peoples R China.
2016
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume94Issue:19Pages:-
Subtype期刊论文
AbstractIn pressure-induced reversible structural transitions, the term "reversible" refers to the recovery of the virgin structure in a material upon complete decompression. Pressure-induced amorphous-to-crystalline transitions have been claimed to be reversible, but evidence that amorphous material recovers its virgin amorphous structure upon complete depressurization has been lacking. In amorphous As2Se3 (a-As2Se3) chalcogenide, however, we report a novel reversible amorphous-to-crystalline transition that provides compelling experimental evidence that upon complete decompression, the recovered amorphous phase is structurally the same as that of the virgin (as-cast) amorphous phase. Combining the experimental results with ab initio molecular dynamics simulations, we elucidate that the amorphization ismediated by a surplus of total free energy in the high-pressure face-centered cubic phase as compared to the virgin amorphous phase and that the structural recovery to the virgin amorphous phase is a consequence of an enhancement in covalent bonding character over interlayer forces upon complete decompression. Furthermore, we observed a two-dimensional to three-dimensional network transition under compression and its reversibility upon decompression.
DOI10.1103/PhysRevB.94.195211
Indexed BySCI
Language英语
WOS IDWOS:000388818000012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/26615
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorJiang, JZ (reprint author), Zhejiang Univ, Sch Mat Sci & Engn, Int Ctr New Struct Mat, Hangzhou 310027, Peoples R China.; Jiang, JZ (reprint author), Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Lab New Struct Mat, Hangzhou 310027, Peoples R China.
Recommended Citation
GB/T 7714
Ahmad, AS,Lou, HB,Lin, CL,et al. Reversible devitrification in amorphous As2Se3 under pressure[J]. PHYSICAL REVIEW B,2016,94(19):-.
APA Ahmad, AS.,Lou, HB.,Lin, CL.,Li, AG.,Yang, K.,...&Jiang, JZ .(2016).Reversible devitrification in amorphous As2Se3 under pressure.PHYSICAL REVIEW B,94(19),-.
MLA Ahmad, AS,et al."Reversible devitrification in amorphous As2Se3 under pressure".PHYSICAL REVIEW B 94.19(2016):-.
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