Article · Wikipedia archive · Last revised Jul 13, 2026

Quaternary phase

In materials chemistry, a quaternary phase is a chemical compound containing four elements. Some compounds can be molecular or ionic, examples being chlorodifluoromethane and sodium bicarbonate. More typically quaternary phase refers to extended solids. A famous example are the yttrium barium copper oxide superconductors.

Last revised

Jul 13, 2026

Read time

≈ 1 min

Length

93 w

Citations

1

Source

YBa₂Cu₃O₇, abbreviated YBCO is a famous quaternary phase. It features four elements: yttrium (Y), barium (Ba), copper (Cu), and oxygen (O). source ↗

In materials chemistry, a quaternary phase is a chemical compound containing four elements. Some compounds can be molecular or ionic, examples being chlorodifluoromethane (CHClF₂) and sodium bicarbonate (NaCO₃H). More typically quaternary phase refers to extended solids. A famous example are the yttrium barium copper oxide superconductors.¹

See also

See also

References

References

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.