{"success":true,"data":{"mp_id":"mp-13815","type":"ELA","summary":{"formula":"Rb2NaErF6","mp_id":"mp-13815","nelements":4,"is_stable":true,"nsites":10,"density":4.38814,"volume":179.81332,"a":6.33547,"b":6.33547,"c":6.33547,"alpha":60,"beta":60,"gamma":60,"space_group":"Fm-3m","space_group_num":225,"crystal_system":"Cubic","formation_energy_per_atom":-3.60213,"energy_per_atom":-5.53793,"energy_above_hull":0,"point_group":"m-3m","Bravais_Lattice":"cF","Bravais_Combination":"cF","packing_fraction":0.7405,"uncorrected_energy_per_atom":-5.26073,"volume_per_atom":17.98133,"c_over_a":1,"b_over_a":1,"poisson_ratio":0.26011,"Is_FCC":1,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":34.753,"g_vrh":19.848,"E_Calc(GPa)":50.021,"homogeneous_poisson":0.26,"Vickers_Hard_Est(GPa)":2.964,"universal_anisotropy":0.058,"Lame_Lambda(GPa)":21.521,"Pugh_Ratio(K\/G)":1.750957275292221,"Ductility":"Brittle","bulk_modulus":34.753,"shear_modulus":19.848,"debye_temperature":737,"sound_velocity":2363.9,"homogeneity":0.26},"electronic":{"is_metal":false,"band_gap":6.4976,"is_gap_direct":true,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":0,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-13815","mp_task_ids":["aaabnfwl","aaadsyuu","aaaenurq","aaaezwcj","aaafcpjs"]}}}