{"success":true,"data":{"mp_id":"mp-149","type":"ELA","summary":{"formula":"Si","mp_id":"mp-149","nelements":1,"is_stable":true,"nsites":2,"density":2.3128,"volume":40.32953,"a":3.84928,"b":3.84928,"c":3.84928,"alpha":60.00001,"beta":60,"gamma":60.00001,"space_group":"Fd-3m","space_group_num":227,"crystal_system":"Cubic","formation_energy_per_atom":0,"energy_per_atom":-8.77376,"energy_above_hull":0,"point_group":"m-3m","Bravais_Lattice":"cF","Bravais_Combination":"cF","packing_fraction":0.7405,"uncorrected_energy_per_atom":-8.77376,"volume_per_atom":20.16476,"c_over_a":1,"b_over_a":1,"poisson_ratio":0.21546,"Is_FCC":1,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":88.916,"g_vrh":62.445,"E_Calc(GPa)":151.799,"homogeneous_poisson":0.215,"Vickers_Hard_Est(GPa)":11.853,"universal_anisotropy":0.227,"Lame_Lambda(GPa)":47.285999999999994,"Pugh_Ratio(K\/G)":1.4239090399551604,"Ductility":"Ductile","bulk_modulus":88.916,"shear_modulus":62.445,"debye_temperature":628.3,"sound_velocity":5746.1,"homogeneity":0.215},"electronic":{"is_metal":false,"band_gap":0.6103,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":true,"total_magnetization":0,"ordering":"Unknown","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-149","mp_task_ids":["aaacieeq","aaacmxxl","aaadryyt","aaaeguxu","aaaenlow","aaafxgxk","aaagbned"]}}}