Improving the magnetic properties of hydrothermally synthesized barium ferrite
The formation of fine barium ferrite (BaFe 12O 19) powders under hydrothermal conditions at [OH −]/[NO 3 −] ratio of 2 has been examined by employing barium nitrate and ferric nitrate as the starting materials. The effects of Ba/Fe ratio, reaction temperature and time on the formation, particle size...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 1999-05, Vol.195 (2), p.452-459 |
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| container_issue | 2 |
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| container_title | Journal of magnetism and magnetic materials |
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| creator | Liu, Xiangyuan Wang, John Gan, Leong-Ming Ng, Ser-Choon |
| description | The formation of fine barium ferrite (BaFe
12O
19) powders under hydrothermal conditions at [OH
−]/[NO
3
−] ratio of 2 has been examined by employing barium nitrate and ferric nitrate as the starting materials. The effects of Ba/Fe ratio, reaction temperature and time on the formation, particle size, and magnetic properties of barium ferrite were studied. To further enhance the magnetic properties of hydrothermally synthesized barium ferrite, it was subjected to a thermal treatment at various temperatures up to 1200°C. The phase development was monitored using a X-ray diffractometer and the particle size and size distribution of the resulting powders were characterized using light scattering particle size analyzer, together with a scanning electron microscope. The magnetic properties measured using vibrating sample magnetometer show that the saturation magnetization can be improved from 46 to 64
emu/g when the hydrothermally processed powder is calcined at 1100°C and the intrinsic coercivity also increases with calcination temperature and peaks at 1000°C giving an
i
H
c
of 2.3
kOe. |
| doi_str_mv | 10.1016/S0304-8853(99)00123-7 |
| format | Article |
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12O
19) powders under hydrothermal conditions at [OH
−]/[NO
3
−] ratio of 2 has been examined by employing barium nitrate and ferric nitrate as the starting materials. The effects of Ba/Fe ratio, reaction temperature and time on the formation, particle size, and magnetic properties of barium ferrite were studied. To further enhance the magnetic properties of hydrothermally synthesized barium ferrite, it was subjected to a thermal treatment at various temperatures up to 1200°C. The phase development was monitored using a X-ray diffractometer and the particle size and size distribution of the resulting powders were characterized using light scattering particle size analyzer, together with a scanning electron microscope. The magnetic properties measured using vibrating sample magnetometer show that the saturation magnetization can be improved from 46 to 64
emu/g when the hydrothermally processed powder is calcined at 1100°C and the intrinsic coercivity also increases with calcination temperature and peaks at 1000°C giving an
i
H
c
of 2.3
kOe.</description><identifier>ISSN: 0304-8853</identifier><identifier>DOI: 10.1016/S0304-8853(99)00123-7</identifier><identifier>CODEN: JMMMDC</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Barium ferrite ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Domain effects, magnetization curves, and hysteresis ; Exact sciences and technology ; Fine-particle systems ; Hydrothermal processing ; Intrinsic coercivity ; Magnetic properties and materials ; Physics ; Saturation magnetization ; Small particles and nanoscale materials ; Studies of specific magnetic materials ; Thermal treatment</subject><ispartof>Journal of magnetism and magnetic materials, 1999-05, Vol.195 (2), p.452-459</ispartof><rights>1999</rights><rights>1999 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c433t-301585956a4f3cdfb87d2c644611a2f315d7edfb2a81450fe18723bae3790ea33</citedby><cites>FETCH-LOGICAL-c433t-301585956a4f3cdfb87d2c644611a2f315d7edfb2a81450fe18723bae3790ea33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0304-8853(99)00123-7$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1770854$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Xiangyuan</creatorcontrib><creatorcontrib>Wang, John</creatorcontrib><creatorcontrib>Gan, Leong-Ming</creatorcontrib><creatorcontrib>Ng, Ser-Choon</creatorcontrib><title>Improving the magnetic properties of hydrothermally synthesized barium ferrite</title><title>Journal of magnetism and magnetic materials</title><description>The formation of fine barium ferrite (BaFe
12O
19) powders under hydrothermal conditions at [OH
−]/[NO
3
−] ratio of 2 has been examined by employing barium nitrate and ferric nitrate as the starting materials. The effects of Ba/Fe ratio, reaction temperature and time on the formation, particle size, and magnetic properties of barium ferrite were studied. To further enhance the magnetic properties of hydrothermally synthesized barium ferrite, it was subjected to a thermal treatment at various temperatures up to 1200°C. The phase development was monitored using a X-ray diffractometer and the particle size and size distribution of the resulting powders were characterized using light scattering particle size analyzer, together with a scanning electron microscope. The magnetic properties measured using vibrating sample magnetometer show that the saturation magnetization can be improved from 46 to 64
emu/g when the hydrothermally processed powder is calcined at 1100°C and the intrinsic coercivity also increases with calcination temperature and peaks at 1000°C giving an
i
H
c
of 2.3
kOe.</description><subject>Barium ferrite</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Domain effects, magnetization curves, and hysteresis</subject><subject>Exact sciences and technology</subject><subject>Fine-particle systems</subject><subject>Hydrothermal processing</subject><subject>Intrinsic coercivity</subject><subject>Magnetic properties and materials</subject><subject>Physics</subject><subject>Saturation magnetization</subject><subject>Small particles and nanoscale materials</subject><subject>Studies of specific magnetic materials</subject><subject>Thermal treatment</subject><issn>0304-8853</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqFULtOAzEQdAESIfAJSC4QguLAPttnX4VQxEuKoABqy_GtE6N7BPsS6fh6nIegpFrt7MzuziB0Rsk1JbS4eSOM8EwpwS7L8ooQmrNMHqDRL3yEjmP8JGnCVTFCL8_NMnRr385xvwDcmHkLvbc4gUsIvYeIO4cXQxW6NA-NqesBx6FNTfTfUOGZCX7VYAch-B5O0KEzdYTTfR2jj4f798lTNn19fJ7cTTPLGeszRqhQohSF4Y7Zys2UrHJbcF5QanLHqKgkJDg3inJBHFAlczYzwGRJwDA2Rhe7venPrxXEXjc-Wqhr00K3ijqXySAr80QUO6INXYwBnF4G35gwaEr0JjG9TUxvotFlqbeJaZl05_sDJlpTu2Ba6-OfWEqiBE-02x0Nktm1h6Cj9dBaqHwA2-uq8_8c-gHNdoLc</recordid><startdate>19990501</startdate><enddate>19990501</enddate><creator>Liu, Xiangyuan</creator><creator>Wang, John</creator><creator>Gan, Leong-Ming</creator><creator>Ng, Ser-Choon</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>19990501</creationdate><title>Improving the magnetic properties of hydrothermally synthesized barium ferrite</title><author>Liu, Xiangyuan ; Wang, John ; Gan, Leong-Ming ; Ng, Ser-Choon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c433t-301585956a4f3cdfb87d2c644611a2f315d7edfb2a81450fe18723bae3790ea33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Barium ferrite</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Domain effects, magnetization curves, and hysteresis</topic><topic>Exact sciences and technology</topic><topic>Fine-particle systems</topic><topic>Hydrothermal processing</topic><topic>Intrinsic coercivity</topic><topic>Magnetic properties and materials</topic><topic>Physics</topic><topic>Saturation magnetization</topic><topic>Small particles and nanoscale materials</topic><topic>Studies of specific magnetic materials</topic><topic>Thermal treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Xiangyuan</creatorcontrib><creatorcontrib>Wang, John</creatorcontrib><creatorcontrib>Gan, Leong-Ming</creatorcontrib><creatorcontrib>Ng, Ser-Choon</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of magnetism and magnetic materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Xiangyuan</au><au>Wang, John</au><au>Gan, Leong-Ming</au><au>Ng, Ser-Choon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improving the magnetic properties of hydrothermally synthesized barium ferrite</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>1999-05-01</date><risdate>1999</risdate><volume>195</volume><issue>2</issue><spage>452</spage><epage>459</epage><pages>452-459</pages><issn>0304-8853</issn><coden>JMMMDC</coden><abstract>The formation of fine barium ferrite (BaFe
12O
19) powders under hydrothermal conditions at [OH
−]/[NO
3
−] ratio of 2 has been examined by employing barium nitrate and ferric nitrate as the starting materials. The effects of Ba/Fe ratio, reaction temperature and time on the formation, particle size, and magnetic properties of barium ferrite were studied. To further enhance the magnetic properties of hydrothermally synthesized barium ferrite, it was subjected to a thermal treatment at various temperatures up to 1200°C. The phase development was monitored using a X-ray diffractometer and the particle size and size distribution of the resulting powders were characterized using light scattering particle size analyzer, together with a scanning electron microscope. The magnetic properties measured using vibrating sample magnetometer show that the saturation magnetization can be improved from 46 to 64
emu/g when the hydrothermally processed powder is calcined at 1100°C and the intrinsic coercivity also increases with calcination temperature and peaks at 1000°C giving an
i
H
c
of 2.3
kOe.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0304-8853(99)00123-7</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0304-8853 |
| ispartof | Journal of magnetism and magnetic materials, 1999-05, Vol.195 (2), p.452-459 |
| issn | 0304-8853 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27001392 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Barium ferrite Condensed matter: electronic structure, electrical, magnetic, and optical properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Fine-particle systems Hydrothermal processing Intrinsic coercivity Magnetic properties and materials Physics Saturation magnetization Small particles and nanoscale materials Studies of specific magnetic materials Thermal treatment |
| title | Improving the magnetic properties of hydrothermally synthesized barium ferrite |
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