离子取代对Ba(Zn_(1-x)Co_x)_2Fe_(16)O_(27)铁氧体μ_i-T曲线的影响

The Influence of Ion Substitution of Ba(Zn(1-x) Co_x)_ 2Fe_(16)O_(27)Hexaferrite on the μ_i-T Curve

采用氧化物工艺制备Ｂａ（Ｚｎ１－ ｘＣｏｘ ）２Ｆｅ１６Ｏ２７六角铁氧体，通过不同含量Ｃｏ２＋ 、Ｃｕ２＋ 对Ｚｎ２＋ 的取代，发现平面型Ｂａ（Ｚｎ１－ ｘＣｏｘ）２Ｆｅ１６Ｏ２７ 的μｉ－Ｔ 曲线出现双峰（Ｉ、ＩＩ）．随着Ｃｏ２＋ 、Ｃｕ２＋含量的增加，第ＩＩ峰分别移向高温和低温．并通过Ｂａ（Ｚｎ１－ ｘＣｏｘ）２Ｆｅ１６Ｏ２７的磁晶各向异性常数Ｋｕ１、Ｋｕ２、Ｋｕ３随温度Ｔ 的变化对实验结果进行了分析，所得结果对改善材料温度稳定性有实用价值．

Tw o peaks (I、II) of μi-T curve have been found in the planar anisotropic Ba(Zn1- x Cox )2Fe16O27 hexaferrites prepared by ceram ic process in this paper, and the second peak IIm oves to highertem perature as Co2+ substitution increase, butas Cu2+ substitution increase itm oves to lowertem perature. Theexperim entresultscorrespond w ith the influence oftem perature on the m agnetic crystalline anisotropic constantKu1、 Ku2、Ku3, and are a greathelp to im proving thetem perature stability ofthe m aterials.