Room-Temperature Deintercalation and Self-Extrusion of Ga from Cr2GaN

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Science  07 May 1999:
Vol. 284, Issue 5416, pp. 937-939
DOI: 10.1126/science.284.5416.937

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Bulk samples of the layered ternary nitride Cr2GaN were observed to extrude filaments of pure elemental gallium at room temperature. This self-extrusion phenomenon is best described as a room-temperature deintercalation of gallium from the basal planes of porous Cr2GaN samples. The extruded filaments are single crystals with 2- to 100-micrometer diameters and can be several centimeters long.

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