In situ X-ray observation of phase transitions in Mg[subscript 2]Si under high pressure
Journal Article
·
· Solid State Commun.
The structural behavior of magnesium silicide (Mg{sub 2}Si) was investigated in a diamond anvil cell (DAC) by energy dispersive synchrotron X-ray diffraction up to 41.3 GPa at room temperature. Two pressure-induced structural phase transitions for Mg{sub 2}Si have been identified, at around 7.5 GPa and 21.3 GPa, respectively. The new structures of Mg{sub 2}Si are in turn determined as orthorhombic phase with anti-cotunnite (Pnma,Z=4) structure and hexagonal phase with Ni{sub 2}In-type (P6{sub 3}/mmc,Z=2) structure. Both the structural phase transitions are of first-order nature and are reversible.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1005584
- Journal Information:
- Solid State Commun., Vol. 149, Issue (17-18) ; 05, 2009; ISSN 0038-1098
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Phase transitions and equations of state of alkaline earth fluorides CaF[subscript 2], SrF[subscript 2], and BaF[subscript 2] to Mbar pressures
Structural stability of Fe[subscript 5]Si[subscript 3] and Ni[subscript 2]Si studied by high-pressure x-ray diffraction and ab initio total-energy calculations
Phase Transitions and Equations of State of Alkaline Earth Fluorides CaF2 SrF2 and BaF2 to Mbar Pressures
Journal Article
·
Mon Jun 14 00:00:00 EDT 2010
· Phys. Rev. B
·
OSTI ID:1005584
+4 more
Structural stability of Fe[subscript 5]Si[subscript 3] and Ni[subscript 2]Si studied by high-pressure x-ray diffraction and ab initio total-energy calculations
Journal Article
·
Wed Apr 02 00:00:00 EDT 2008
· Phys. Rev. B
·
OSTI ID:1005584
+4 more
Phase Transitions and Equations of State of Alkaline Earth Fluorides CaF2 SrF2 and BaF2 to Mbar Pressures
Journal Article
·
Sat Dec 31 00:00:00 EST 2011
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:1005584
+4 more