Magnetic and Magnetization Properties of Iron Aluminum Oxide Thin Films Prepared by Sol-Gel

Riaz S.; Azam M.; Ashraf R.; Naseem S.

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Magnetic and Magnetization Properties of Iron Aluminum Oxide Thin Films Prepared by Sol-Gel

機譯：溶膠-凝膠法制備的鐵鋁氧化物薄膜的磁性和磁化性能

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Amongst various spinels of the form MAl₂O₄ (where Mu0003D;Fe, Co, Mg and so on), FeAl₂O₄ exhibits exceptional chemical and physical properties including high flexibility and ductility. Reports on magnetic properties of these spinels are limited especially in the form of thin films. Structural and magnetic properties of iron aluminium oxide thin films prepared by Sol-Gel and spin coating method have been reported in this work. The ratio of Fe/Al is varied as 0.4, 0.45, 0.5, 0.55, and 0.6. Films are annealed in the presence of vacuum at 300°C under 500 Oe applied magnetic field. Peaks of FeAl₂O₄ are observed for Fe/Al of 0.4. However, Fe₂O₃ peaks appear along with iron aluminium oxide peaks for rest of the ratios.

(M)

–

(H)

curves show enhanced magnetic properties of films having 42.325 emu/cm3 saturation magnetization (M_s), 10 emu/cm3 remnant magnetization (

(M_{{boldsymbol {r}}})

), and 430.19 Oe coercivity (

(H_{{{boldsymbol {c}}}})

). Conductivity measurements show transition in electrical properties at a temperature of 127 K. Room temperature magnetoresistance ~10% is observed for iron aluminum oxide thin films with Fe/Al of 0.4.

機譯：在各種形式的MAl _{2 O _{4 尖晶石（其中Mu0003D； Fe，Co，Mg等）中，FeAl _{2 O _{4 具有出色的化學和物理特性，包括高柔韌性和延展性。這些尖晶石的磁性的報告特別是在薄膜形式方面是有限的。這項工作已經報道了通過溶膠-凝膠法和旋涂法制備的鐵鋁氧化物薄膜的結構和磁性。 Fe / Al的比率變化為0.4、0.45、0.5、0.55和0.6。在真空存在下，在500 Oe施加的磁場下，300°C的條件下對薄膜進行退火。 Fe / Al為0.4時，觀察到FeAl _{2 O _{4 的峰。然而，對于其余比率，Fe _{2 O _{3 峰與鐵氧化鋁峰一起出現。（M） – （H）< / tex-math> 曲線顯示具有42.325 emu / cm 3 飽和磁化強度（M _{s ），10 emu / cm < sup> 3 剩余磁化強度（（M _ {{boldsymbol {r}}}）），和430.19 Oe矯頑力（（H _ {{{boldsymbol {c}}}}} ）。電導率測量結果表明，在127 K的溫度下，電性能發生了轉變。Fe/ Al為0.4的鐵鋁氧化物薄膜的室溫磁阻約為10％。}}}}}}}}}

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《Magnetics, IEEE Transactions on》 |2014年第8期|1-4|共4頁
作者
Riaz S.; Azam M.; Ashraf R.; Naseem S.;
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正文語種 eng
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關鍵詞
FeAl2O4; ferromagnetic; spinel ferrites; thin films;

機譯：FeAl2O4;鐵磁;尖晶石鐵氧體薄膜;

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Magnetic and Magnetization Properties of Iron Aluminum Oxide Thin Films Prepared by Sol-Gel

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