Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Mechanical behaviors and phase transition of Ho 2 O 3 nanocrystals under high pressure

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4890341· OSTI ID:1385864
 [1];  [2];  [3];  [4];  [5]
  1. Sichuan Univ., Chengdu (China). Inst. of Atomic & Molecular Physics; Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China)
  2. Sichuan Univ., Chengdu (China). Inst. of Atomic & Molecular Physics
  3. Sichuan Univ., Chengdu (China). Inst. of Atomic & Molecular Physics; China Academy of Engineering Physics, Mianyang (China). Inst. of Fluid Physics and National Key Lab. of Shockwave and Detonation Physic
  4. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China)
  5. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China); Carnegie Inst. of Science Argonne, IL (United States). High Pressure Synergetic Consortium (HPSync)
Mechanical properties and phase transition often show quite large crystal size dependent behavior, especially at nanoscale under high pressure. Here, we have investigated Ho2O3 nanocrystals with in-situ x-ray diffraction and Raman spectroscopy under high pressure up to 33.5 GPa. When compared to the structural transition routine cubic $->$ monoclinic $->$ hexagonal phase in bulk Ho2O3 under high pressure, the nano-sized Ho2O3 shows a much higher onset transition pressure from cubic to monoclinic structure and followed by a pressure-induced-amorphization under compression. The detailed analysis on the Q (Q = 2$$π$$/d) dependent bulk moduli reveals the nanosized Ho2O3 particles consist of a clear higher compressible shell and a less compressible core. Insight into these phenomena shed lights on micro-mechanism studies of the mechanical behavior and phase evolution for nanomaterials under high pressure, in general.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0001057
OSTI ID:
1385864
Alternate ID(s):
OSTI ID: 1210833
OSTI ID: 22308911
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 116; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (32)

Nanocrystalline Materials book January 2012
Nanocrystalline materials journal January 1989
Pressure induced amorphization of materials journal January 1996
Nanocrystalline materials journal September 1989
The compressibility of nanocrystalline nickel journal June 2000
XPS comparison between nanocrystalline γ-alumina and a new high pressure polymorph journal October 2000
An International Evaluation of Holmium Oxide Solution Reference Materials for Wavelength Calibration in Molecular Absorption Spectrophotometry journal July 2002
Phase Transition and Compressibility in Silicon Nanowires journal September 2008
Finite strain isotherm and velocities for single-crystal and polycrystalline NaCl at high pressures and 300°K journal January 1978
Calibration of the ruby pressure gauge to 800 kbar under quasi-hydrostatic conditions journal January 1986
Compressibility and structural stability of nanoparticulate goethite journal January 2012
Pressure induced structural transitions in nanometer size particles of PbS journal October 1996
The effect of particle size on the structural transitions in zinc sulfide journal January 2001
Nanocrystalline iron at high pressure journal May 2001
Comparative studies of compressibility between nanocrystalline and bulk nickel journal January 2007
Phase transformation of Ho 2 O 3 at high pressure journal July 2011
Grain-size effect on pressure-induced semiconductor-to-metal transition in ZnS journal December 1999
Two-dimensional detector software: From real detector to idealised image or two-theta scan journal January 1996
Negative thermal expansion and its relation to high pressures journal March 2004
Uses for a Holmium Oxide Filter in Spectrophotometry journal December 1964
In situ x-ray diffraction study of the pressure-induced phase transformation in nanocrystalline CeO 2 journal June 2001
Enhanced Compressibility and Pressure-Induced Structural Changes of Nanocrystalline Iron: In Situ Mössbauer Spectroscopy journal November 1995
Effective hydrostatic limits of pressure media for high-pressure crystallographic studies journal January 2007
Activation Volumes for Solid-Solid Transformations in Nanocrystals journal September 2001
Size Dependence of Structural Metastability in Semiconductor Nanocrystals journal April 1997
Imperfect Oriented Attachment: Dislocation Generation in Defect-Free Nanocrystals journal August 1998
High-Pressure Structural Transformations in Semiconductor Nanocrystals journal October 1995
Nanocrystalline materials journal January 1995
Enhanced bulk modulus and reduced transition pressure in γ-Fe 2 O 3 nanocrystals journal December 1998
Structural stability in nanocrystalline ZnO journal April 2000
Diffraction Studies of Nanocrystals: Theory and Experiment journal July 2002
Pressure Induced Structural Transitions in Nanometer Size Particles of PbS. journal January 1998

Cited By (3)

The Influence of Synthesis Parameters on Structural and Magnetic Properties of Iron Oxide Nanomaterials journal January 2020
The Influence of Synthesis Parameters on Structural and Magnetic Properties of Iron Oxide Nanomaterials posted_content December 2019
Pressure-Induced Phase Transitions in Sesquioxides journal November 2019