{"success":true,"data":{"mp_id":"mp-15178","type":"TRA","summary":{"formula":"Lu4C7","mp_id":"mp-15178","nelements":2,"is_stable":true,"nsites":22,"density":8.94603,"volume":291.02692,"a":3.58344,"b":6.25742,"c":13.45768,"alpha":90,"beta":90,"gamma":105.32951,"space_group":"P2_1\/c","space_group_num":14,"crystal_system":"Monoclinic","formation_energy_per_atom":-0.32277,"energy_per_atom":-7.84128,"energy_above_hull":0,"point_group":"2\/m","Bravais_Lattice":"mP","Bravais_Combination":"mP","packing_fraction":null,"uncorrected_energy_per_atom":-20.68526088681818,"volume_per_atom":13.2285,"c_over_a":3.75552,"b_over_a":1.7462,"poisson_ratio":0.24971,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":128.084,"g_vrh":76.958,"E_Calc(GPa)":192.35,"homogeneous_poisson":0.24971,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":0.29,"Lame_Lambda(GPa)":76.77866666666668,"Pugh_Ratio(K\/G)":1.6643363912783598,"Ductility":"Ductile","bulk_modulus":128.084,"shear_modulus":76.958,"debye_temperature":862.5,"sound_velocity":3256.1,"homogeneity":0.25},"electronic":{"is_metal":true,"band_gap":0,"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-15178","mp_task_ids":["aaadnjsu","aaadrivn","aaaekwig","aaaetlyl","aaafbtok"]}}}