Structure of InSb at High Pressures

Abstract
It has been found by x‐ray diffraction studies at high pressure (∼30 kbar) that InSb occurs in a form other than the β‐Sn type which has been reported in previous studies. The new modification appears to have a simple orthorhombic structure with two atoms in the unit cell and can be derived from the β‐Sn structure by a simple shear process. While this structure may be a metastable one, it cannot be ruled out that it may be more stable than the β‐Sn form. On the other hand, it is confirmed that the β‐Sn structure is readily obtained by quenching to 77°K and releasing the pressure, after the transformation has occurred in the vicinity of 30 kbar.