{"success":true,"data":{"mp_id":"mp-999388","type":"TRA","summary":{"formula":"NbC","mp_id":"mp-999388","nelements":2,"is_stable":false,"nsites":4,"density":6.52403,"volume":53.40836,"a":3.71423,"b":3.71423,"c":4.47034,"alpha":90,"beta":90,"gamma":120,"space_group":"P6_3\/mmc","space_group_num":194,"crystal_system":"Hexagonal","formation_energy_per_atom":-0.39708,"energy_per_atom":-17.73774,"energy_above_hull":0.16856,"point_group":"6\/mmm","Bravais_Lattice":"hP","Bravais_Combination":"hP","packing_fraction":0.7405,"uncorrected_energy_per_atom":-9.99563869,"volume_per_atom":13.35209,"c_over_a":1.20357,"b_over_a":1,"poisson_ratio":0.319,"Is_FCC":0,"Is_BCC":0,"Is_HCP":1},"elasticity":{"k_vrh":236.476,"g_vrh":97.351,"E_Calc(GPa)":256.812,"homogeneous_poisson":0.319,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":2.205,"Lame_Lambda(GPa)":171.57533333333333,"Pugh_Ratio(K\/G)":2.4291070456389763,"Ductility":"Brittle","bulk_modulus":236.476,"shear_modulus":97.351,"debye_temperature":542.7,"sound_velocity":4325.3,"homogeneity":0.319},"electronic":{"is_metal":true,"band_gap":0,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":0.00099,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":2.0e-5},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-999388","mp_task_ids":["aaacisgi","aaaduupe","aaadybme","aaaetrnm","aaafxcjl"]}}}