Strain-driven structural selection and amorphization during first-order phase transitions in nanocrystalline Ho2 O3 under pressure

Yan，Xiaozhi1,2; Ren，Xiangting1; Zhu，Shengcai3; Van Gennep，Derrick2; Wang，Liping1; Zhao，Yusheng1; Wang，Shanmin1

2021-04-15

10.1103/PhysRevB.103.L140103

Physical Review B   影响因子和分区

2469-9950

2469-9969

Pressure-induced first-order phase transition often involves spatial disruption around the nucleus of a new phase, due to the inherent volume change. Atomic relaxations during this process produce lattice strain that in turn affects the nucleation kinetics and dynamics of transition, especially in nanoparticles. However, it is difficult to experimentally measure the lattice strain of materials, leading to many unsettled questions regarding size-dependent phenomena in nanomaterials at pressure. Here we present a method to determine the lattice strain of nanoparticles during first-order phase transitions using the pressure-volume data. A case study of nano-Ho2O3 with multiple pressure-induced phase transitions is systematically performed to reveal the critical role of lattice strain in the size-dependent phase selection and amorphization. A phenomenological model is also given to describe the metastability of intermediate phases and size-tunable phase evolution during the nucleation of new phases at pressure.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[11027405] ; Key Research Platforms and Research Projects of Universities in Guangdong Province[2018KZDXM062] ; Guangdong Innovative & Entrepreneurial Research Team Program[2016ZT06C279] ; Shenzhen Peacock Plan[KQTD2016053019134356] ; Shenzhen Science and Technology Innovation Committee[JCYJ20190809173213150]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000646666600004

AMER PHYSICAL SOC

20211710244217

Crystallization ; Nanocrystalline materials ; Nanocrystals ; Nanoparticles ; Nucleation

Nanotechnology:761 ; Chemical Operations:802.3 ; Solid State Physics:933 ; Crystal Growth:933.1.2

PHYSICS

2-s2.0-85104407303

Scopus

1.Department of Physics,Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen, Guangdong,518055,China
2.Lyman Laboratory of Physics,Harvard University,Cambridge,02138,United States
3.School of Materials,Sun Yat-sen University,Guangzhou, Guangdong,510275,China

Yan，Xiaozhi,Ren，Xiangting,Zhu，Shengcai,et al. Strain-driven structural selection and amorphization during first-order phase transitions in nanocrystalline Ho2 O3 under pressure[J]. Physical Review B,2021,103(14).

Yan，Xiaozhi.,Ren，Xiangting.,Zhu，Shengcai.,Van Gennep，Derrick.,Wang，Liping.,...&Wang，Shanmin.(2021).Strain-driven structural selection and amorphization during first-order phase transitions in nanocrystalline Ho2 O3 under pressure.Physical Review B,103(14).

Yan，Xiaozhi,et al."Strain-driven structural selection and amorphization during first-order phase transitions in nanocrystalline Ho2 O3 under pressure".Physical Review B 103.14(2021).