Compression properties and p-T phase diagrams of C60, C70, and C61D2

• We have measured the compression properties of C60, C70, and C61D2 in the range 0 - 1.2 GPa over large ranges in temperature (150 to 420 K). Our results for simple cubic (sc) C60 agree well with several recent studies using different methods, but data for face centered cubic (fcc) C60 and for C70 differ strongly between different groups. From our data we deduce the low-temperature orientational, rotational, and translational structural phase diagram of C60, but similar studies on C70 and C61D2 show that these materials have more complicated phase diagrams which cannot yet be mapped in detail.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

Fullerenes

C60

C70

C61H2

C61D2

compressibility

volume

bulk modulus

phase diagram

orientational structure

Condensed matter physics

Kondenserade materiens fysik

fysik

Physics

Publication and Content Type

ref (subject category)

kon (subject category)