Magnetism and thermal induced characteristics of Fe2O3 content bioceramics |
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| Authors: | Chun-Shiang Wu Chi-Shiung Hsi Fang-Chi Hsu Moo-Chin Wang Yung-Sheng Chen |
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| Institution: | 1. Department of Materials Science and Engineering, National United University, Miaoli 36003, Taiwan;2. Department of Fragrance and Cosmetics, Kaohsiung Medical University, Kaohsiung 807, Taiwan;3. Department of Materials Science and Engineering, I-Shou University, Kaohsiung 803, Taiwan |
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| Abstract: | Magnetic properties of Li2O–MnO2–CaO–P2O5–SiO2 (LMCPS) glasses doped with various amounts of Fe2O3 were investigated. There is a dramatic change in the magnetic property of pristine LMCPS after the addition of Fe2O3 and crystallized at 850 °C for 4 h. Both the electron paramagnetic resonance and magnetic susceptibility measurements showed that the glass ceramic with 4 at% Fe2O3 exhibited the coexistence of superparamagnetism and ferromagnetism at room temperature. When the Fe2O3 content was higher than 8 at%, the LMCPS glasses showed ferromagnetism behavior. The complex magnetic behavior is due to the distribution of (Li, Mn)ferrite particle sizes driven by the Fe2O3 content. The thermal induced hysteresis loss of the crystallized LMCPS glass ceramics was characterized under an alternating magnetic field. The energy dissipations of the crystallized LMCPS glass ceramics were determined by the concentration and Mn/Fe ratios of Li(Mn, Fe)ferrite phase formed in the glass ceramics. |
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| Keywords: | Glass-ceramic Magnetic property Superparamagnetism Ferrite Biomedical application |
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