کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1490605 992329 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and magnetic properties of conventional and microwave treated Ni–Zr doped barium strontium hexaferrite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Structural and magnetic properties of conventional and microwave treated Ni–Zr doped barium strontium hexaferrite
چکیده انگلیسی

M-type hexaferrites of component B0.5Sr0.5Fe12−2xNixZrxO19 were investigated. The XRD patterns show single phase of the magnetoplumbite barium strontium ferrite and no other phases were present. Significant increase in line broadening of the XRD patterns was observed indicating a decrease of grain size. The samples exhibit well defined crystallization; all of them are hexagonal platelet grains. As the substitution level increased x = 0.2–0.8 mol%, the grains are agglomerated and the average diameter increased. The Hc decreases remarkably with increasing Ni and Zr ions content. It was found that the particle size could be effectively decreased and coercivity Hc could easily be controlled by varying the concentration (x) without significantly decreasing saturation magnetization. In particular, Ba0.5Sr0.5Fe12−2xNixZrxO19 with x = 0.2, 0.4, 0.6, 0.8 mol% has suitable magnetic characteristics with particle size small enough for high-density magnetic recording applications.

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► Saturation magnetization increases whereas the coercivity decreases.
► The transition from hard phase to soft phase.
► Therefore, it is used for high-density magnetic recording applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 47, Issue 2, February 2012, Pages 188–192
نویسندگان
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