Size dependent arsenic volatilization in ErAs nanoparticle powders
- Univ. of Delaware, Newark, DE (United States); DOE/OSTI
- Univ. of Delaware, Newark, DE (United States). Advanced Materials Characterization Lab.
- Univ. of Delaware, Newark, DE (United States)
The thermal stability of ErAs nanoparticles and bulk-like powders, synthesized by pulsed laser ablation and direct reaction, respectively, is investigated up to 700 °C in N2. Thermogravimetric analysis and XRD are used to monitor the decomposition temperatures and crystalline compositions of the synthesized powders, respectively. Degradation of unagglomerated nanoparticle powders is observed at 350°C accompanied by the crystallization of amorphous Er2O3. Mass balance analysis suggests that the mass loss occurs as a result of arsenic volatilization rather than congruent sublimation of ErAs. Conversely, micron-sized agglomerated particles grown by direct reaction show little evidence for degradation under similar thermal processing conditions. This significant decrease in ErAs stability compared to agglomerated powders suggests a size dependence on the degradation characteristics of ErAs.
- Research Organization:
- Univ. of Delaware, Newark, DE (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0008166
- OSTI ID:
- 1611023
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 16 Vol. 113; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Growth and Thermal Characterization of TbAs Nanoparticles Grown by Inert Gas Condensation
|
journal | October 2019 |
Similar Records
Rapid Atomic Ordering Transformation toward Intermetallic Nanoparticles
Physicochemical and antibacterial characterization of ionocity Ag/Cu powder nanoparticles