15-vertex frank-kasper, Orthorhombic, Structural transitions

• Gd-Ge-Si
• Cl-Rb-Zn
• Gd-Ge
• K-O-Se
• H-N-O-S
• temperature for structural transition
• magnetic field for structural transition
• pressure for structural transition
• structural transition
• non-disordered
• ternary
• nonmetal
• disordered
• alkali