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# Temperature dependence of PM materials

- To: femm mailing list <femm@yahoogroups.com>
- Subject: Temperature dependence of PM materials
- From: David Meeker <dmeeker@ieee.org>
- Date: Wed, 02 Oct 2002 13:16:35 -0400
- User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.1) Gecko/20020826

`I'm looking at sort of an odd application in which it would be desirable to have a PM material with a very strong temperature dependence. Usually, the opposite is the desired property--one usually desires magnetic materials that have as little temperature dependence as possible so that small changes in operating temperature don't affect machine performance. However, I'm curious to know if anyone has a material in which the knee of the magnetization curve moves significantly at fairly low temperatures, say in the 60C to 80C range. Since this is sort of an odd requirement, I haven't been able to find anything like this in my usual manufacturer's spec sheets and favorite PM websites.`

    Dave.
    --
    David Meeker <http://femm.berlios.de/dmeeker>

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