{"success":true,"data":{"mp_id":"mp-20939","type":"TRA","summary":{"formula":"PrPb3","mp_id":"mp-20939","nelements":2,"is_stable":true,"nsites":4,"density":10.59387,"volume":119.51943,"a":4.92583,"b":4.92583,"c":4.92583,"alpha":90,"beta":90,"gamma":90,"space_group":"Pm-3m","space_group_num":221,"crystal_system":"Cubic","formation_energy_per_atom":-0.48163,"energy_per_atom":-50.04647,"energy_above_hull":0,"point_group":"m-3m","Bravais_Lattice":"cP","Bravais_Combination":"cP","packing_fraction":0.5236,"uncorrected_energy_per_atom":-50.0464719075,"volume_per_atom":29.87986,"c_over_a":1,"b_over_a":1,"poisson_ratio":0.41176,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":47.139,"g_vrh":8.839,"E_Calc(GPa)":24.957,"homogeneous_poisson":0.41176,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":8.958,"Lame_Lambda(GPa)":41.24633333333334,"Pugh_Ratio(K\/G)":5.333069351736622,"Ductility":"Brittle","bulk_modulus":47.139,"shear_modulus":8.839,"debye_temperature":106.3,"sound_velocity":1035.7,"homogeneity":0.412},"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-20939","mp_task_ids":["aaadmmwv","aaadswbs","aaaehfeo","aaaeuquo","aaafiihm"]}}}