Microstructure and electromagnetic properties of LiFe5O8 ferrite ceramics prepared from wet- and dry-milled powders

Influence of dry‐ and wet‐milled LLZTO particles on the sintered pellets

“…The unreacted La 2 O 3 is due to the incomplete garnet phase formation after calcining at 950°C for 6 h. After milling, the diffraction peaks decrease in intensity and broaden in width, implying that the milling progressively refines the LLZTO particles. This peak‐broadening effect is more obvious after dry milling than after wet milling, which means that dry milling is more efficient in crystallite size reduction or amorphization over wet milling 28,29 . Close inspection of the peak at 16.7° shows that the peak shifts to a smaller angle after milling (Figure 3B), corresponding to the expansion of the unit cells.…”

“…This peak-broadening effect is more obvious after dry milling than after wet milling, which means that dry milling is more efficient in crystallite size reduction or amorphization over wet milling. 28,29 Close inspection of the peak at 16.7 • shows that the peak shifts to a smaller angle after milling (Figure 3B), corresponding to the expansion of the unit cells. The increase in the lattice parameter can be associated with the Li + /H + exchange on the LLZTO surface, that is, the replacement of stronger Li-O bonds with weaker H-O bonds.…”

Mechanochemical synthesis of nanostructured and composite oxide ceramics: From mechanisms to tailored properties

“…For example, magnetically tuned filters can be made from BFO 164 . Powders of LiFe 5 O 8 and NiFe 2 O 4 ferrite 178–182 can be used in microwave technology, magnetic storage devices, sensor technology, and high‐density information storage media for medical diagnostic applications.…”

“…Therefore, the synthesized ceramics exhibit good electromagnetic properties. Vlasov and coworkers 178 used wet and dry ball milling mechanical chemistry to synthesize LiFe 5 O 8 ferrite powder. Compared to dry ground powders, wet grinding promotes a more intense powder grinding process, resulting in a denser ferrite ceramic.…”

“…For example, magnetically tuned filters can be made from BFO 164. Powders of LiFe 5 O 8 and NiFe 2 O 4 ferrite[178][179][180][181][182] can be used in microwave technology, magnetic storage devices, sensor technology, and high-density information storage media for medical diagnostic applications.Marinca et al50 synthesized Fe 3 O 4 powder by mixing Fe and Fe 2 O 3 powder as initial reactants by ceramic and mechanochemical methods. After only 5 min of ball milling, nanocrystalline/nanoscale powder was observed.…”