High pressure induced coordination evolution in chain compound Li[subscript 2]CuO[subscript 2]

Journal Article · Tue Dec 01 04:00:00 EST 2009 · J. Solid State Chem.

DOI:https://doi.org/10.1016/j.jssc.2009.08.019· OSTI ID:1005962

You, Shujie; Li, Zhi; Yang, Liuxiang; Dong, Cheng; Chen, Liangcheng; Jin, Changqing; Hu, Jingzhu; Shen, Guoyin; Mao, Hokwang

Using diamond anvil cell technique with angle dispersive X-ray diffraction (ADXD) of synchrotron radiation and electrical conductivity measurements, we have observed that CuO{sub 2} chain compound Li{sub 2}CuO{sub 2} transforms from ambient orthorhombic symmetry into a new phase at above 5.4 GPa and room temperature. The new phase was found to be of monoclinic structure with an increased oxygen coordination number of Cu{sup 2+} from four at ambient to six at high pressure that provides a structural basis of the evolution of principle physical properties. The high pressure phase of Li{sub 2}CuO{sub 2} is discussed in line with the first principle calculations.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: USDOE
• OSTI ID: 1005962
• Journal Information: J. Solid State Chem., Journal Name: J. Solid State Chem. Journal Issue: (11) ; 11, 2009 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
CHAINS
COORDINATION NUMBER
DIAMONDS
ELECTRIC CONDUCTIVITY
OXYGEN
PHYSICAL PROPERTIES
SYMMETRY
SYNCHROTRON RADIATION
X-RAY DIFFRACTION