{"success":true,"data":{"mp_id":"mp-1074148","type":"TRA","summary":{"formula":"Mg4Si7","mp_id":"mp-1074148","nelements":2,"is_stable":false,"nsites":22,"density":2.46396,"volume":396.02679,"a":14.96583,"b":14.96583,"c":6.74147,"alpha":87.97509,"beta":87.97509,"gamma":15.21541,"space_group":"Cm","space_group_num":8,"crystal_system":"Monoclinic","formation_energy_per_atom":0.20315,"energy_per_atom":-3.84223,"energy_above_hull":0.26238,"point_group":"m","Bravais_Lattice":"mC","Bravais_Combination":"mC","packing_fraction":null,"uncorrected_energy_per_atom":-3.8874070836363632,"volume_per_atom":18.00122,"c_over_a":0.45046,"b_over_a":1,"poisson_ratio":null,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":null,"g_vrh":null,"E_Calc(GPa)":null,"homogeneous_poisson":null,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":null,"Lame_Lambda(GPa)":null,"Pugh_Ratio(K\/G)":null,"Ductility":null,"bulk_modulus":null,"shear_modulus":null,"debye_temperature":null,"sound_velocity":null,"homogeneity":null},"electronic":{"is_metal":true,"band_gap":0,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":0.00073,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-1074148","mp_task_ids":["aaacjdba","aaaeaosd"]}}}