@article{oai:tsukuba.repo.nii.ac.jp:00037051,
 author = {鈴木, 義和 and 所, 裕子 and Suzuki, Yoshikazu and Tokoro, Hiroko and Abe, Hiroya},
 journal = {Materials letters},
 month = {Jan},
 note = {In this letter, a new process to obtain spherical porous granules (SPGs) is presented, namely self-organized formation only by a one-step heat-treatment. Commercial MgCO3 (basic), α-Fe2O3 and Nb2O5 powders of Mg:Fe:Nb=1:1:1 in mole fraction were wet-ball milled, and were heat-treated in air at 800–1350 °C. The samples heated at ≥1100 °C, most of the samples became SPGs with the diameter of ∼50–100 μm, containing 3-D network structure. The main constituent phase of porous spheres was pseudobrookite-type MgFeNbO5. The formation mechanism of porous microspheres was discussed by using SEM observation and high-temperature XRD analysis.},
 pages = {43--46},
 title = {Self-organized formation of spherical porous granules only by one-step heat-treatment in MgO–Fe2O3–Nb2O5 system},
 volume = {163},
 year = {2016}
}