“…a = b = 6.552; c = 9.640 Site symmetry (SS) and coordination number (CN) of cations (Cs + /La 3+ ): SS − 4e, CN = 8; W 6+ : SS − 8f, CN = 4 Formula units per primitive cell Z pr = 2 Density, g cm −3 ~6.16 Melting temperature, °C ~1040 Thermal expansion coefficient, 10 −6 K −1 [48] α b Averaged statistical data by results of the study double rare-earth multifunctional tungstates (see, e.g. [33,37]).…”