{"success":true,"data":{"mp_id":"mp-1903","type":"TRA","summary":{"formula":"BaAl4","mp_id":"mp-1903","nelements":2,"is_stable":true,"nsites":5,"density":3.44467,"volume":118.22685,"a":4.56329,"b":4.56329,"c":6.53041,"alpha":110.44985,"beta":110.44985,"gamma":90.00001,"space_group":"I4\/mmm","space_group_num":139,"crystal_system":"Tetragonal","formation_energy_per_atom":-0.24118,"energy_per_atom":-3.62144,"energy_above_hull":0,"point_group":"4\/mmm","Bravais_Lattice":"tI","Bravais_Combination":"tI","packing_fraction":null,"uncorrected_energy_per_atom":-10.940881915999999,"volume_per_atom":23.64537,"c_over_a":1.43107,"b_over_a":1,"poisson_ratio":0.25562,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":50.737,"g_vrh":29.625,"E_Calc(GPa)":74.395,"homogeneous_poisson":0.25562,"Vickers_Hard_Est(GPa)":null,"universal_anisotropy":0.127,"Lame_Lambda(GPa)":30.987000000000002,"Pugh_Ratio(K\/G)":1.7126413502109705,"Ductility":"Ductile","bulk_modulus":50.737,"shear_modulus":29.625,"debye_temperature":444.2,"sound_velocity":3257.9,"homogeneity":0.256},"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-1903","mp_task_ids":["aaadmtys","aaaehkzp","aaaeuwpq","aaafalaz","aaafbwbd"]}}}