Engineering of magnetic properties in doped bismuth ferrite materials

The engineering of magnetic behaviour of Li/Zn doped BiFeO3 had been done by synthesized a polycrystalline of BiFeO3, Bi0.96Li0.02FeO3, and Bi0.95Zn0.05FeO3. Investigation of crystallite structure and magnetic properties of the sampel had been done by X-ray diffraction and VSM analysis. At room temperature, the lithium and zinc doped bismuth ferrite has conducted a different magnetic behaviour. Within the ferromagnetic region, an increases of magnetic saturation or enlarger magnetic coercivity were identified. Doping lithium resulted in increasing magnetic saturation (Ms) and magnetic remanent (Mr), significantly. Meanwhile, doping zinc resulted in enlarger of magnetic coercivity coincide with the reveal of Bi20FeO40 as the second phase

Engineering of magnetic properties in doped bismuth ferrite materials

The engineering of magnetic behaviour of Li/Zn doped BiFeO3 had been done by synthesized a polycrystalline of BiFeO3, Bi0.96Li0.02FeO3, and Bi0.95Zn0.05FeO3. Investigation of crystallite structure and magnetic properties of the sampel had been done by X-ray diffraction and VSM analysis. At room temperature, the lithium and zinc doped bismuth ferrite has conducted a different magnetic behaviour. Within the ferromagnetic region, an increases of magnetic saturation or enlarger magnetic coercivity were identified. Doping lithium resulted in increasing magnetic saturation (Ms) and magnetic remanent (Mr), significantly. Meanwhile, doping zinc resulted in enlarger of magnetic coercivity coincide with the reveal of Bi20FeO40 as the second phase

Pengaruh Perendaman Bambu Dengan Air Laut Terhadap Kekerasan dan Laju Keausan Komposit Kampas Rem

Bamboo is a natural material that is widely found in South Banten. Using bamboo as an alternative material for manufacturing brake pads is interesting to research. Bamboo resistance to attacks of organisms is so low that it is necessary to give initial treatment. Preservation of bamboo sticks is done by soaking them in seawater. This immersion is determined for 15 and 30 days. The comparison of the composite constituent composition is 30% bamboo fiber, 28% bamboo particles, 2% zinc, and 40% epoxy resin. Compaction pressure is carried out by 400 kg/cm2 for 10 minutes. The sintering process is carried out at a temperature of 150 °C for 60 minutes. From this research, it is known that the immersion of bamboo stems in seawater tends to decrease the hardness and the wear rate of composites.Bambu merupakan material alam yang banyak dijumpai di Banten Selatan. Pemanfaatan bambu sebagai material alternatif untuk pembuatan kampas rem menarik untuk diteliti. Ketahanan bambu terhadap serangan serangan organisme sangat rendah sehingga perlu diberikan perlakuan awal. Pengawetan batang bambu dilakukan dengan perendaman di dalam air laut. Perendaman ini ditentukan selama 15 dan 30 hari. Perbandingan komposisi penyusun komposit adalah 30% serat bambu, 28% partikel bambu, 2% seng, dan 40% resin epoxy. Tekanan kompaksi dilakukan sebesar 400 kg/cm2 selama 10 menit. Proses sintering dilakukan pada suhu 150°C selama 60 menit. Dari penelitian ini diketahui bahwa perendaman batang bambu dengan air laut cenderung menurunkan kekerasan dan laju keausan komposit