{"success":true,"data":{"mp_id":"mp-16220","type":"ELA","summary":{"formula":"Si","mp_id":"mp-16220","nelements":1,"is_stable":false,"nsites":34,"density":2.00607,"volume":790.43091,"a":10.3783,"b":10.3783,"c":10.3783,"alpha":60,"beta":60,"gamma":60,"space_group":"Fd-3m","space_group_num":227,"crystal_system":"Cubic","formation_energy_per_atom":0.39319,"energy_per_atom":-8.38057,"energy_above_hull":0.39319,"point_group":"m-3m","Bravais_Lattice":"cF","Bravais_Combination":"cF","packing_fraction":0.7405,"uncorrected_energy_per_atom":-8.38057,"volume_per_atom":23.24797,"c_over_a":1,"b_over_a":1,"poisson_ratio":0.2476,"Is_FCC":1,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":61.244,"g_vrh":37.17,"E_Calc(GPa)":92.747,"homogeneous_poisson":0.248,"Vickers_Hard_Est(GPa)":6.244,"universal_anisotropy":0.069,"Lame_Lambda(GPa)":36.464,"Pugh_Ratio(K\/G)":1.6476728544525154,"Ductility":"Ductile","bulk_modulus":61.244,"shear_modulus":37.17,"debye_temperature":498.2,"sound_velocity":4777.5,"homogeneity":0.248},"electronic":{"is_metal":false,"band_gap":0.5334,"is_gap_direct":false,"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-16220","mp_task_ids":["aaaboxtj","aaadrulk","aaagjcrg"]}}}