{"success":true,"data":{"mp_id":"mp-603694","type":"TRA","summary":{"formula":"Si3N4","mp_id":"mp-603694","nelements":2,"is_stable":false,"nsites":28,"density":3.21167,"volume":290.12402,"a":7.71131,"b":7.71131,"c":5.63373,"alpha":90,"beta":90,"gamma":120,"space_group":"P31c","space_group_num":159,"crystal_system":"Trigonal","formation_energy_per_atom":-0.5772,"energy_per_atom":-9.55382,"energy_above_hull":0.74374,"point_group":"3m","Bravais_Lattice":"hP","Bravais_Combination":"hP","packing_fraction":0.7405,"uncorrected_energy_per_atom":-7.438413187857143,"volume_per_atom":10.36157,"c_over_a":0.73058,"b_over_a":1,"poisson_ratio":null,"Is_FCC":0,"Is_BCC":0,"Is_HCP":1},"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":true,"total_magnetization":4.01354,"ordering":"FM","num_magnetic_sites":2,"total_mag_norm_vol":0.01383},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-603694","mp_task_ids":["aaacahvj","aaadahce"]}}}