|
|||||
|
|
A constitutive model for quasicrystal plasticity |
|
| Authors: | M. Feuerbacher P. Schall Y. Estrin Y. Bréchet |
| Affiliation: | 1. Material Science Division , Indira Gandhi Centre for Atomic Research , Kalpakkam, Tamil Nadu, India;2. Department of Physics , Anna University , Chennai, Tamil Nadu, India;3. Material Science Division , Indira Gandhi Centre for Atomic Research , Kalpakkam, Tamil Nadu, India;4. Pressure and Vacuum Standards , National Physical Laboratory , New Delhi, India;5. Department of Physics , Anna University , Chennai, Tamil Nadu, India |
| Abstract: | High-pressure X-ray diffraction studies on gadolinium sesquioxide (Gd2O3) have been carried out up to a pressure of ～25 GPa in a diamond-anvil cell at room temperature. Gadolinium oxide, which has a cubic or bixbyite structure under ambient conditions, undergoes an irreversible structural phase at around 12 GPa. The high-pressure phase has been identified as a hexagonal La2O3-type structure. The bulk modulus and its pressure derivative of this phase have been calculated. |
| Keywords: | rare earth sesquioxides f-electron systems diffraction high-pressure effects oxides phase transformations |