The biaxial-strained Sr 4 Al 2 O 7 film has a tetragonal structural symmetry, enabling coherent growth of high-quality ABO 3 /SAO T epitaxial heterostructures, which suppresses the crack formation ...

There are seven major crystallization systems in mineralogy, each defined by unique symmetry properties and angles. The seven main crystal systems—cubic, tetragonal, orthorhombic, hexagonal ...

A simulation study now shows that the nucleation of water into atomic stackings of cubic and hexagonal ices occurs through a metastable precursor phase with tetragonal symmetry, and that this ...