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zhudan0921

金虫 (小有名气)

[求助] 关于磁性问题的请教,急!!! 已有2人参与

小弟对磁性不是很懂,不太明白审稿人的意思,不知该如何回答,还请懂这方面的牛人帮帮忙。下面是审稿人的意见:
5) Magnetic measurements: in line 216 it is written “remanence and coercivity are zero”. Is it Mr=0 emu/g and Hc=0Oe or this values are close to zero like Mr a few emu/g and Hc= over a dozen Oe, what is common for nanosized soft magnetic spinel ferrites? This needs clarification
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zhudan0921

金虫 (小有名气)

引用回帖:
8楼: Originally posted by 又个七年 at 2015-06-19 15:26:00
我觉得确定无疑了,你可以放大坐标原点,如果矫顽力小于10 左右,剩磁也是零点几,你就可以is the characteristic of a typical superparamagnetism. 一丁点的矫顽力和剩磁 可能是  MPMS 里的残余磁场造成的。比如 ...

主要是这句话不是很理解,要怎么回答尼?what is common for nanosized soft magnetic spinel ferrites?
10楼2015-06-20 09:00:06
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鲁小阳的

新虫 (小有名气)

【答案】应助回帖

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zhudan0921: 金币+5 2015-06-19 08:53:47
我觉得就是需要表征材料的矫顽力和剩磁,而且要说明这是软磁尖晶石铁氧体。
2楼2015-06-18 22:14:27
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又个七年

木虫 (著名写手)

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zhudan0921: 金币+5 2015-06-19 08:53:52
For soft magnetic spinel ferrites, the remanence and coercivity are strongly dependent on the particle size. For a multi domain sample, the coercivity may changes from several tens Oe to hundred Oe, and the  remanence is dependent on the sample weight (it should not be zero any way).  If your sample is in single domain state, then it is superparamagnetic and the coercivity  and  remanence should be zero.

You can distinguish superparamagnetic from ferri/ferromagnetic state by the particle size, or by carry out ZFC-FC measurement.
3楼2015-06-18 22:46:34
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权哥哥景

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4楼2015-06-19 00:03:40
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