Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method
•Ni0.4Cd0.3Zn0.3Fe2O4 ferrites were synthesized using sol-gel method at 900 °C and 1100 °C.•The samples crystallize in the cubic spinel type structure with Fd3‾m space group.•Values of magnetization, TC, |ΔSMmax| and RCP increase with increasing the sintering temperature.•Critical exponents are clos...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2018-10, Vol.464, p.91-102 |
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| creator | Hcini, Sobhi Kouki, Noura Omri, Aref Dhahri, Abdessalem Bouazizi, Mohamed Lamjed |
| description | •Ni0.4Cd0.3Zn0.3Fe2O4 ferrites were synthesized using sol-gel method at 900 °C and 1100 °C.•The samples crystallize in the cubic spinel type structure with Fd3‾m space group.•Values of magnetization, TC, |ΔSMmax| and RCP increase with increasing the sintering temperature.•Critical exponents are close to the tricritical mean-field model for sample sintered at 1100 °C.•Critical exponents belong to a different universality class for sample sintered at 900 °C.
We have investigated the effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni0.4Cd0.3Zn0.3Fe2O4 ferrites synthesized using sol-gel method at 900 °C and 1100 °C. X-ray diffraction patterns indicated that samples crystallize in the cubic spinel structure (Fd3‾m space group) with an increase of lattice constant and average crystallite size as the sintering temperature increases. Magnetic measurements revealed that that the prepared samples undergo second-order ferromagnetic (FM) to paramagnetic (PM) phase transitions. An increment in magnetization, Curie temperature, magnetic entropy change and relative cooling power has been observed with increasing the sintering temperature. The magnetic entropy change reached maximum values of about 1.11 J.kg−1.K−1 and 1.62 J.kg−1.K−1 for μ0H = 5 T corresponding to relative cooling power (RCP) of 152.09 J.kg−1 and 253.65 J.kg−1 for samples sintered at 900 °C and 1100 °C, respectively. These values are comparable favorably with those of some others ferrites considered as possible candidates for magnetic refrigeration. The estimated critical exponents obtained for sample sintered at 1100 °C are close to the tricritical mean-field model; whereas for sample sintered at 900 °C, the exponents belong to a different universality class. This change of critical exponents is mainly due to the increase of average crystallite size as the sintering temperature increases. |
| doi_str_mv | 10.1016/j.jmmm.2018.05.045 |
| format | Article |
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We have investigated the effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni0.4Cd0.3Zn0.3Fe2O4 ferrites synthesized using sol-gel method at 900 °C and 1100 °C. X-ray diffraction patterns indicated that samples crystallize in the cubic spinel structure (Fd3‾m space group) with an increase of lattice constant and average crystallite size as the sintering temperature increases. Magnetic measurements revealed that that the prepared samples undergo second-order ferromagnetic (FM) to paramagnetic (PM) phase transitions. An increment in magnetization, Curie temperature, magnetic entropy change and relative cooling power has been observed with increasing the sintering temperature. The magnetic entropy change reached maximum values of about 1.11 J.kg−1.K−1 and 1.62 J.kg−1.K−1 for μ0H = 5 T corresponding to relative cooling power (RCP) of 152.09 J.kg−1 and 253.65 J.kg−1 for samples sintered at 900 °C and 1100 °C, respectively. These values are comparable favorably with those of some others ferrites considered as possible candidates for magnetic refrigeration. The estimated critical exponents obtained for sample sintered at 1100 °C are close to the tricritical mean-field model; whereas for sample sintered at 900 °C, the exponents belong to a different universality class. This change of critical exponents is mainly due to the increase of average crystallite size as the sintering temperature increases.</description><identifier>ISSN: 0304-8853</identifier><identifier>EISSN: 1873-4766</identifier><identifier>DOI: 10.1016/j.jmmm.2018.05.045</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Cadmium ; Cooling ; Critical behavior ; Cubic lattice ; Curie temperature ; Diffraction patterns ; Entropy ; Exponents ; Ferrites ; Ferromagnetism ; Lattice parameters ; Magnetic measurement ; Magnetic properties ; Magnetism ; Magnetocaloric effect ; Phase transitions ; Refrigeration ; Rietveld refinement ; Second order transition ; Sintering ; Sol-gel processes ; X-ray diffraction</subject><ispartof>Journal of magnetism and magnetic materials, 2018-10, Vol.464, p.91-102</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Oct 15, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-ed384d372bd2f9858563f113f12b95ee0d2c81e2e8fec054bb044b564b77ddaa3</citedby><cites>FETCH-LOGICAL-c328t-ed384d372bd2f9858563f113f12b95ee0d2c81e2e8fec054bb044b564b77ddaa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304885318300143$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Hcini, Sobhi</creatorcontrib><creatorcontrib>Kouki, Noura</creatorcontrib><creatorcontrib>Omri, Aref</creatorcontrib><creatorcontrib>Dhahri, Abdessalem</creatorcontrib><creatorcontrib>Bouazizi, Mohamed Lamjed</creatorcontrib><title>Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method</title><title>Journal of magnetism and magnetic materials</title><description>•Ni0.4Cd0.3Zn0.3Fe2O4 ferrites were synthesized using sol-gel method at 900 °C and 1100 °C.•The samples crystallize in the cubic spinel type structure with Fd3‾m space group.•Values of magnetization, TC, |ΔSMmax| and RCP increase with increasing the sintering temperature.•Critical exponents are close to the tricritical mean-field model for sample sintered at 1100 °C.•Critical exponents belong to a different universality class for sample sintered at 900 °C.
We have investigated the effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni0.4Cd0.3Zn0.3Fe2O4 ferrites synthesized using sol-gel method at 900 °C and 1100 °C. X-ray diffraction patterns indicated that samples crystallize in the cubic spinel structure (Fd3‾m space group) with an increase of lattice constant and average crystallite size as the sintering temperature increases. Magnetic measurements revealed that that the prepared samples undergo second-order ferromagnetic (FM) to paramagnetic (PM) phase transitions. An increment in magnetization, Curie temperature, magnetic entropy change and relative cooling power has been observed with increasing the sintering temperature. The magnetic entropy change reached maximum values of about 1.11 J.kg−1.K−1 and 1.62 J.kg−1.K−1 for μ0H = 5 T corresponding to relative cooling power (RCP) of 152.09 J.kg−1 and 253.65 J.kg−1 for samples sintered at 900 °C and 1100 °C, respectively. These values are comparable favorably with those of some others ferrites considered as possible candidates for magnetic refrigeration. The estimated critical exponents obtained for sample sintered at 1100 °C are close to the tricritical mean-field model; whereas for sample sintered at 900 °C, the exponents belong to a different universality class. This change of critical exponents is mainly due to the increase of average crystallite size as the sintering temperature increases.</description><subject>Cadmium</subject><subject>Cooling</subject><subject>Critical behavior</subject><subject>Cubic lattice</subject><subject>Curie temperature</subject><subject>Diffraction patterns</subject><subject>Entropy</subject><subject>Exponents</subject><subject>Ferrites</subject><subject>Ferromagnetism</subject><subject>Lattice parameters</subject><subject>Magnetic measurement</subject><subject>Magnetic properties</subject><subject>Magnetism</subject><subject>Magnetocaloric effect</subject><subject>Phase transitions</subject><subject>Refrigeration</subject><subject>Rietveld refinement</subject><subject>Second order transition</subject><subject>Sintering</subject><subject>Sol-gel processes</subject><subject>X-ray diffraction</subject><issn>0304-8853</issn><issn>1873-4766</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kM1u1TAQhS1EJS4tL8DKElsS_BMnvhIbdNUCUgUb2LCxHHty6yiJw9ip1MfoG-PowpaFZY98zpmZj5C3nNWc8fbDWI_zPNeCcV0zVbNGvSAHrjtZNV3bviQHJllTaa3kK_I6pZExxhvdHsjz7TCAyzQONIUlA4blTDPMK6DNGwKNC00ZN1cKO72nsz0vkIP794rOThGDo3bx1GEoX3aiPTzYxxAx7bnfQnXy1a-FDoBFAImuCKtF8HRLe7sUp-oME50hP0R_Q64GOyV48_e-Jj_vbn-cvlT33z9_PX26r5wUOlfgpW687ETvxXDUSqtWDpyXI_qjAmBeOM1BgC77MdX0PWuaXrVN33XeWyuvybtL7orx9wYpmzFuuJSWRrAjU51upS4qcVE5jCkhDGbFMFt8MpyZHb0ZzY7e7OgNU6agL6aPFxOU-R8DoEkuwOLAByywjY_hf_Y_6VmQAg</recordid><startdate>20181015</startdate><enddate>20181015</enddate><creator>Hcini, Sobhi</creator><creator>Kouki, Noura</creator><creator>Omri, Aref</creator><creator>Dhahri, Abdessalem</creator><creator>Bouazizi, Mohamed Lamjed</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>20181015</creationdate><title>Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method</title><author>Hcini, Sobhi ; Kouki, Noura ; Omri, Aref ; Dhahri, Abdessalem ; Bouazizi, Mohamed Lamjed</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-ed384d372bd2f9858563f113f12b95ee0d2c81e2e8fec054bb044b564b77ddaa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Cadmium</topic><topic>Cooling</topic><topic>Critical behavior</topic><topic>Cubic lattice</topic><topic>Curie temperature</topic><topic>Diffraction patterns</topic><topic>Entropy</topic><topic>Exponents</topic><topic>Ferrites</topic><topic>Ferromagnetism</topic><topic>Lattice parameters</topic><topic>Magnetic measurement</topic><topic>Magnetic properties</topic><topic>Magnetism</topic><topic>Magnetocaloric effect</topic><topic>Phase transitions</topic><topic>Refrigeration</topic><topic>Rietveld refinement</topic><topic>Second order transition</topic><topic>Sintering</topic><topic>Sol-gel processes</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hcini, Sobhi</creatorcontrib><creatorcontrib>Kouki, Noura</creatorcontrib><creatorcontrib>Omri, Aref</creatorcontrib><creatorcontrib>Dhahri, Abdessalem</creatorcontrib><creatorcontrib>Bouazizi, Mohamed Lamjed</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>Hcini, Sobhi</au><au>Kouki, Noura</au><au>Omri, Aref</au><au>Dhahri, Abdessalem</au><au>Bouazizi, Mohamed Lamjed</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>2018-10-15</date><risdate>2018</risdate><volume>464</volume><spage>91</spage><epage>102</epage><pages>91-102</pages><issn>0304-8853</issn><eissn>1873-4766</eissn><abstract>•Ni0.4Cd0.3Zn0.3Fe2O4 ferrites were synthesized using sol-gel method at 900 °C and 1100 °C.•The samples crystallize in the cubic spinel type structure with Fd3‾m space group.•Values of magnetization, TC, |ΔSMmax| and RCP increase with increasing the sintering temperature.•Critical exponents are close to the tricritical mean-field model for sample sintered at 1100 °C.•Critical exponents belong to a different universality class for sample sintered at 900 °C.
We have investigated the effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni0.4Cd0.3Zn0.3Fe2O4 ferrites synthesized using sol-gel method at 900 °C and 1100 °C. X-ray diffraction patterns indicated that samples crystallize in the cubic spinel structure (Fd3‾m space group) with an increase of lattice constant and average crystallite size as the sintering temperature increases. Magnetic measurements revealed that that the prepared samples undergo second-order ferromagnetic (FM) to paramagnetic (PM) phase transitions. An increment in magnetization, Curie temperature, magnetic entropy change and relative cooling power has been observed with increasing the sintering temperature. The magnetic entropy change reached maximum values of about 1.11 J.kg−1.K−1 and 1.62 J.kg−1.K−1 for μ0H = 5 T corresponding to relative cooling power (RCP) of 152.09 J.kg−1 and 253.65 J.kg−1 for samples sintered at 900 °C and 1100 °C, respectively. These values are comparable favorably with those of some others ferrites considered as possible candidates for magnetic refrigeration. The estimated critical exponents obtained for sample sintered at 1100 °C are close to the tricritical mean-field model; whereas for sample sintered at 900 °C, the exponents belong to a different universality class. This change of critical exponents is mainly due to the increase of average crystallite size as the sintering temperature increases.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jmmm.2018.05.045</doi><tpages>12</tpages></addata></record> |
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| subjects | Cadmium Cooling Critical behavior Cubic lattice Curie temperature Diffraction patterns Entropy Exponents Ferrites Ferromagnetism Lattice parameters Magnetic measurement Magnetic properties Magnetism Magnetocaloric effect Phase transitions Refrigeration Rietveld refinement Second order transition Sintering Sol-gel processes X-ray diffraction |
| title | Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method |
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