Structural, microstructural, magnetic and dielectric properties of Ni-Zn ferrite powders synthesized by plasma arc discharge process followed by post-annealing
In this work, Ni0.5Zn0.5Fe2O4 powders were prepared by plasma arc discharge method followed by the subsequent heat treatments withinthe temperature range of 1000–1250 °C. Structural, microstructural, magnetic and dielectric properties of the as-synthesized and heat treated powders are examined in de...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2019-10, Vol.488, p.165369, Article 165369 |
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| container_title | Journal of magnetism and magnetic materials |
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| creator | Safari, A. Gheisari, Kh Farbod, M. |
| description | In this work, Ni0.5Zn0.5Fe2O4 powders were prepared by plasma arc discharge method followed by the subsequent heat treatments withinthe temperature range of 1000–1250 °C. Structural, microstructural, magnetic and dielectric properties of the as-synthesized and heat treated powders are examined in detail. The results indicate that as-synthesized powders contain a mixture of ZnO, Fe0.72OZn0.13 and Ni-Zn ferrite phases. However, the quantitative amount of Ni-Zn ferrite phase gradually increases by post annealing process. This finding is accompanied by an improvement in the magnetic properties such that a single phase Ni-Zn ferrite with the average crystallite size of 212 nm, lattice parameter of 8.332 Å, saturation magnetization of 35.1 emu/g and coercivity of 24.9 Oe is formed after annealing at 1250 °C. Nevertheless, dielectric properties measured in the frequency range 20 Hz–10 MHz exhibits a complex behaviour due to the different mechanisms that cause polarization. |
| doi_str_mv | 10.1016/j.jmmm.2019.165369 |
| format | Article |
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Structural, microstructural, magnetic and dielectric properties of the as-synthesized and heat treated powders are examined in detail. The results indicate that as-synthesized powders contain a mixture of ZnO, Fe0.72OZn0.13 and Ni-Zn ferrite phases. However, the quantitative amount of Ni-Zn ferrite phase gradually increases by post annealing process. This finding is accompanied by an improvement in the magnetic properties such that a single phase Ni-Zn ferrite with the average crystallite size of 212 nm, lattice parameter of 8.332 Å, saturation magnetization of 35.1 emu/g and coercivity of 24.9 Oe is formed after annealing at 1250 °C. Nevertheless, dielectric properties measured in the frequency range 20 Hz–10 MHz exhibits a complex behaviour due to the different mechanisms that cause polarization.</description><identifier>ISSN: 0304-8853</identifier><identifier>EISSN: 1873-4766</identifier><identifier>DOI: 10.1016/j.jmmm.2019.165369</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Annealing ; Coercivity ; Crystallites ; Dielectric properties ; Discharge ; Electric arcs ; Frequency ranges ; Heat treatment ; Magnetic properties ; Magnetic saturation ; Nanocrystalline ; Ni-Zn ferrite ; Plasma arc discharge ; Plasma arc heating ; Saturation magnetization ; Synthesis ; Zinc oxide</subject><ispartof>Journal of magnetism and magnetic materials, 2019-10, Vol.488, p.165369, Article 165369</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Oct 15, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-3db7f41fadd2f7e228003a378bae52858bf85fd63440e71e1ddd41648e5155e13</citedby><cites>FETCH-LOGICAL-c328t-3db7f41fadd2f7e228003a378bae52858bf85fd63440e71e1ddd41648e5155e13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304885319311278$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Safari, A.</creatorcontrib><creatorcontrib>Gheisari, Kh</creatorcontrib><creatorcontrib>Farbod, M.</creatorcontrib><title>Structural, microstructural, magnetic and dielectric properties of Ni-Zn ferrite powders synthesized by plasma arc discharge process followed by post-annealing</title><title>Journal of magnetism and magnetic materials</title><description>In this work, Ni0.5Zn0.5Fe2O4 powders were prepared by plasma arc discharge method followed by the subsequent heat treatments withinthe temperature range of 1000–1250 °C. Structural, microstructural, magnetic and dielectric properties of the as-synthesized and heat treated powders are examined in detail. The results indicate that as-synthesized powders contain a mixture of ZnO, Fe0.72OZn0.13 and Ni-Zn ferrite phases. However, the quantitative amount of Ni-Zn ferrite phase gradually increases by post annealing process. This finding is accompanied by an improvement in the magnetic properties such that a single phase Ni-Zn ferrite with the average crystallite size of 212 nm, lattice parameter of 8.332 Å, saturation magnetization of 35.1 emu/g and coercivity of 24.9 Oe is formed after annealing at 1250 °C. Nevertheless, dielectric properties measured in the frequency range 20 Hz–10 MHz exhibits a complex behaviour due to the different mechanisms that cause polarization.</description><subject>Annealing</subject><subject>Coercivity</subject><subject>Crystallites</subject><subject>Dielectric properties</subject><subject>Discharge</subject><subject>Electric arcs</subject><subject>Frequency ranges</subject><subject>Heat treatment</subject><subject>Magnetic properties</subject><subject>Magnetic saturation</subject><subject>Nanocrystalline</subject><subject>Ni-Zn ferrite</subject><subject>Plasma arc discharge</subject><subject>Plasma arc heating</subject><subject>Saturation magnetization</subject><subject>Synthesis</subject><subject>Zinc oxide</subject><issn>0304-8853</issn><issn>1873-4766</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9UctuFDEQtBCRWBJ-gJMlrszix4zHK3FBEQGkCA4kFy6W125vPJrxDG0v0fIz_CoebQ6cOLW6VVVdqiLkNWdbzrh6N2yHaZq2gvHdlqtOqt0zsuG6l03bK_WcbJhkbaN1J1-QlzkPjDHearUhf74XPLpyRDu-pVN0OOd_D_aQoERHbfLURxjBFazrgvMCWCJkOgf6NTY_Eg2AGAvQZX70gJnmUyoPkONv8HR_osto82SpRVeFsnuweIBVx0HONMzjOD8-AauDxqYEdozpcEUugh0zvHqal-T-5uPd9efm9tunL9cfbhsnhS6N9Ps-tDxY70XoQQjNmLSy13sLndCd3gfdBa9k2zLoOXDvfctVq6HjXQdcXpI3Z91q6ecRcjHDfMRUXxohlOhrfjtVUeKMWnPKCMEsGCeLJ8OZWYswg1mLMGsR5lxEJb0_k6D6_xUBTXYRkgMfseZp_Bz_R_8LeYuV2A</recordid><startdate>20191015</startdate><enddate>20191015</enddate><creator>Safari, A.</creator><creator>Gheisari, Kh</creator><creator>Farbod, M.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20191015</creationdate><title>Structural, microstructural, magnetic and dielectric properties of Ni-Zn ferrite powders synthesized by plasma arc discharge process followed by post-annealing</title><author>Safari, A. ; Gheisari, Kh ; Farbod, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-3db7f41fadd2f7e228003a378bae52858bf85fd63440e71e1ddd41648e5155e13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Annealing</topic><topic>Coercivity</topic><topic>Crystallites</topic><topic>Dielectric properties</topic><topic>Discharge</topic><topic>Electric arcs</topic><topic>Frequency ranges</topic><topic>Heat treatment</topic><topic>Magnetic properties</topic><topic>Magnetic saturation</topic><topic>Nanocrystalline</topic><topic>Ni-Zn ferrite</topic><topic>Plasma arc discharge</topic><topic>Plasma arc heating</topic><topic>Saturation magnetization</topic><topic>Synthesis</topic><topic>Zinc oxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Safari, A.</creatorcontrib><creatorcontrib>Gheisari, Kh</creatorcontrib><creatorcontrib>Farbod, M.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials 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>Safari, A.</au><au>Gheisari, Kh</au><au>Farbod, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural, microstructural, magnetic and dielectric properties of Ni-Zn ferrite powders synthesized by plasma arc discharge process followed by post-annealing</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>2019-10-15</date><risdate>2019</risdate><volume>488</volume><spage>165369</spage><pages>165369-</pages><artnum>165369</artnum><issn>0304-8853</issn><eissn>1873-4766</eissn><abstract>In this work, Ni0.5Zn0.5Fe2O4 powders were prepared by plasma arc discharge method followed by the subsequent heat treatments withinthe temperature range of 1000–1250 °C. Structural, microstructural, magnetic and dielectric properties of the as-synthesized and heat treated powders are examined in detail. The results indicate that as-synthesized powders contain a mixture of ZnO, Fe0.72OZn0.13 and Ni-Zn ferrite phases. However, the quantitative amount of Ni-Zn ferrite phase gradually increases by post annealing process. This finding is accompanied by an improvement in the magnetic properties such that a single phase Ni-Zn ferrite with the average crystallite size of 212 nm, lattice parameter of 8.332 Å, saturation magnetization of 35.1 emu/g and coercivity of 24.9 Oe is formed after annealing at 1250 °C. Nevertheless, dielectric properties measured in the frequency range 20 Hz–10 MHz exhibits a complex behaviour due to the different mechanisms that cause polarization.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jmmm.2019.165369</doi></addata></record> |
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| subjects | Annealing Coercivity Crystallites Dielectric properties Discharge Electric arcs Frequency ranges Heat treatment Magnetic properties Magnetic saturation Nanocrystalline Ni-Zn ferrite Plasma arc discharge Plasma arc heating Saturation magnetization Synthesis Zinc oxide |
| title | Structural, microstructural, magnetic and dielectric properties of Ni-Zn ferrite powders synthesized by plasma arc discharge process followed by post-annealing |
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