{"success":true,"data":{"mp_id":"mp-21681","type":"TRA","summary":{"formula":"Nb5Ge4","mp_id":"mp-21681","nelements":2,"is_stable":false,"nsites":36,"density":8.1623,"volume":614.46419,"a":6.77821,"b":6.84453,"c":13.24457,"alpha":90,"beta":90,"gamma":90,"space_group":"Pnma","space_group_num":62,"crystal_system":"Orthorhombic","formation_energy_per_atom":-0.39823,"energy_per_atom":-8.06474,"energy_above_hull":0.04922,"point_group":"mmm","Bravais_Lattice":"oP","Bravais_Combination":"oP","packing_fraction":null,"uncorrected_energy_per_atom":-8.06474206138889,"volume_per_atom":17.06845,"c_over_a":1.95399,"b_over_a":1.00978,"poisson_ratio":null,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":null,"g_vrh":null,"E_Calc(GPa)":null,"homogeneous_poisson":null,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":null,"Lame_Lambda(GPa)":null,"Pugh_Ratio(K\/G)":null,"Ductility":null,"bulk_modulus":null,"shear_modulus":null,"debye_temperature":null,"sound_velocity":null,"homogeneity":null},"electronic":{"is_metal":true,"band_gap":0,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":0.00192,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-21681","mp_task_ids":["aaacbtnc","aaaedgmb"]}}}