Coercivity of heat-treated Pr-Co powder compacts (Heat treated single-phase Pr-Co powder compacts, measuring coercivity as function of annealing or sintering temperature)
The variation of coercivity as a function of the temperature of annealing or sintering is reported for compacts of a single-phase PrCo5 powder and also for a mixture of PrCo5 with an additive richer in Pr. For single-phase PrCo5, the intrinsic coercive force decreases steadily with increasing heat-t...
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Veröffentlicht in: | IEEE transactions on magnetics 1971-01, Vol.MAG-7, p.429-431 |
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creator | Schweizer, J Strnat, K J Tsui, J B Y |
description | The variation of coercivity as a function of the temperature of annealing or sintering is reported for compacts of a single-phase PrCo5 powder and also for a mixture of PrCo5 with an additive richer in Pr. For single-phase PrCo5, the intrinsic coercive force decreases steadily with increasing heat-treating temperature and shows a minor peak near 1000 C. For magnets made with the additive, the curve of coercive force vs temperature has two peaks, one at approximately 1050 C and another at 1120 C. This behavior can be correlated with thermal events in the Pr-Co phase diagram. It is interpreted in terms of a model which assumes that pinning sites for the domain walls exist and are concentrated in shells forming on the surface of PrCo5 grains during the sintering. These shells are thought to consist of Pr-Co compounds having lower melting points than PrCo5 and to be epitaxial layers on or between the PrCo5 grains into which the walls can travel from the latter. |
doi_str_mv | 10.1109/TMAG.1971.1067220 |
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For single-phase PrCo5, the intrinsic coercive force decreases steadily with increasing heat-treating temperature and shows a minor peak near 1000 C. For magnets made with the additive, the curve of coercive force vs temperature has two peaks, one at approximately 1050 C and another at 1120 C. This behavior can be correlated with thermal events in the Pr-Co phase diagram. It is interpreted in terms of a model which assumes that pinning sites for the domain walls exist and are concentrated in shells forming on the surface of PrCo5 grains during the sintering. These shells are thought to consist of Pr-Co compounds having lower melting points than PrCo5 and to be epitaxial layers on or between the PrCo5 grains into which the walls can travel from the latter.</description><identifier>ISSN: 0018-9464</identifier><identifier>DOI: 10.1109/TMAG.1971.1067220</identifier><language>eng</language><ispartof>IEEE transactions on magnetics, 1971-01, Vol.MAG-7, p.429-431</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Schweizer, J</creatorcontrib><creatorcontrib>Strnat, K J</creatorcontrib><creatorcontrib>Tsui, J B Y</creatorcontrib><title>Coercivity of heat-treated Pr-Co powder compacts (Heat treated single-phase Pr-Co powder compacts, measuring coercivity as function of annealing or sintering temperature)</title><title>IEEE transactions on magnetics</title><description>The variation of coercivity as a function of the temperature of annealing or sintering is reported for compacts of a single-phase PrCo5 powder and also for a mixture of PrCo5 with an additive richer in Pr. For single-phase PrCo5, the intrinsic coercive force decreases steadily with increasing heat-treating temperature and shows a minor peak near 1000 C. For magnets made with the additive, the curve of coercive force vs temperature has two peaks, one at approximately 1050 C and another at 1120 C. This behavior can be correlated with thermal events in the Pr-Co phase diagram. It is interpreted in terms of a model which assumes that pinning sites for the domain walls exist and are concentrated in shells forming on the surface of PrCo5 grains during the sintering. These shells are thought to consist of Pr-Co compounds having lower melting points than PrCo5 and to be epitaxial layers on or between the PrCo5 grains into which the walls can travel from the latter.</description><issn>0018-9464</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1971</creationdate><recordtype>article</recordtype><recordid>eNptjc1OwzAQhH0AiVJ4AG4-IZBI8SZxEh-riLZIRXAo52rjbGhQEgfbAfFKPCUpfycuu9rZb2YYOwMxAxDqenM3X85ApTADkaRhKA7YRAjIAhUn8RE7du55PGMJYsI-ckNW16-1f-em4jtCH3g7Tir5gw1yw3vzVpLl2rQ9au_4xWr88l_G1d1TQ0G_Q0f_G654S-gGO4Kj9leGjldDp31tun0xdh1hs2eM3Yd6-jJ4anuy6AdLlyfssMLG0enPnrLHxc0mXwXr--VtPl8HPWSxDwqUBWFZpFClJJWCuBBKapWVKi4p00kISqJIdawJkgoVktBFojJUkZKRiKbs_Du3t-ZlIOe3be00NQ12ZAa3DUEmEMk0-gQmPXM_</recordid><startdate>19710101</startdate><enddate>19710101</enddate><creator>Schweizer, J</creator><creator>Strnat, K J</creator><creator>Tsui, J B Y</creator><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>19710101</creationdate><title>Coercivity of heat-treated Pr-Co powder compacts (Heat treated single-phase Pr-Co powder compacts, measuring coercivity as function of annealing or sintering temperature)</title><author>Schweizer, J ; Strnat, K J ; Tsui, J B Y</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p184t-ba5beadb71f7e59914b095c98d94de8c62195a07c4ce16fa9ae0cb698a9395303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1971</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Schweizer, J</creatorcontrib><creatorcontrib>Strnat, K J</creatorcontrib><creatorcontrib>Tsui, J B Y</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schweizer, J</au><au>Strnat, K J</au><au>Tsui, J B Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coercivity of heat-treated Pr-Co powder compacts (Heat treated single-phase Pr-Co powder compacts, measuring coercivity as function of annealing or sintering temperature)</atitle><jtitle>IEEE transactions on magnetics</jtitle><date>1971-01-01</date><risdate>1971</risdate><volume>MAG-7</volume><spage>429</spage><epage>431</epage><pages>429-431</pages><issn>0018-9464</issn><abstract>The variation of coercivity as a function of the temperature of annealing or sintering is reported for compacts of a single-phase PrCo5 powder and also for a mixture of PrCo5 with an additive richer in Pr. For single-phase PrCo5, the intrinsic coercive force decreases steadily with increasing heat-treating temperature and shows a minor peak near 1000 C. For magnets made with the additive, the curve of coercive force vs temperature has two peaks, one at approximately 1050 C and another at 1120 C. This behavior can be correlated with thermal events in the Pr-Co phase diagram. It is interpreted in terms of a model which assumes that pinning sites for the domain walls exist and are concentrated in shells forming on the surface of PrCo5 grains during the sintering. These shells are thought to consist of Pr-Co compounds having lower melting points than PrCo5 and to be epitaxial layers on or between the PrCo5 grains into which the walls can travel from the latter.</abstract><doi>10.1109/TMAG.1971.1067220</doi><tpages>3</tpages></addata></record> |
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title | Coercivity of heat-treated Pr-Co powder compacts (Heat treated single-phase Pr-Co powder compacts, measuring coercivity as function of annealing or sintering temperature) |
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