Ibrahim Barış Sever, Ali Osman Ayaş, Arda Kandemir, Ahmet Ekicibil
{"title":"揭示了La2-xNaxNiMnO6(0.0≤x≤1.0)双钙钛矿锰矿材料中a位取代基对磁热响应的影响","authors":"Ibrahim Barış Sever, Ali Osman Ayaş, Arda Kandemir, Ahmet Ekicibil","doi":"10.1007/s10971-025-06679-8","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, the compounds of La<sub>2-x</sub>Na<sub>x</sub>NiMnO<sub>6</sub> (<i>x</i> = <i>0.0, 0.1, 0.2, 0.3, 0.5</i>, and <i>1.0</i>) double perovskite manganites have been produced by employing the sol-gel method to investigate their magnetocaloric effect. From X-Ray Diffraction analysis, all compounds crystallized in rhombohedral structure form with the <span>\\({\\rm{R}}\\bar{3}{\\rm{c}}\\)</span> space group confirmed using the Rietveld refinement technique. The compounds show a magnetic phase transition from ferromagnetic to paramagnetic according to the temperature-dependent magnetization measurement. The phase transition temperatures sharply increased with Na doping (<i>x</i> = <i>0.1</i>) to 277.8 K which can be considered as under room temperature level and then slowly decreased with further Na concentration to 262.3 K. Using an external magnetic field-dependent magnetization measurements, the isothermal magnetization curves were obtained, and these curves used to find the magnetic entropy change values, which give info about compounds’ characteristics of magnetic cooling performance. Under 5 T magnetic field change, the maximum magnetic entropy change value increased 10 times with a small amount of Na doping (<i>x</i> = <i>0.1</i>), and compounds’ values changed from <i>0.21</i> to <i>1.29</i> Jkg<sup>−1</sup>K<sup>−1</sup> for <i>x</i> = <i>0.0</i> to <i>1.0</i> compounds, respectively. Arrott plots were graphed by using isothermal magnetization curves to demonstrate all the compounds have a 2<sup>nd</sup> order magnetic phase transition which supports that these compounds can be candidates as magnetic refrigerants.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 JSST 30th Anniversary","pages":"235 - 249"},"PeriodicalIF":2.3000,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06679-8.pdf","citationCount":"0","resultStr":"{\"title\":\"Unveiling A-site substituent’s influence on magnetocaloric response in La2-xNaxNiMnO6 (0.0 ≤ x ≤ 1.0) double perovskite manganite materials\",\"authors\":\"Ibrahim Barış Sever, Ali Osman Ayaş, Arda Kandemir, Ahmet Ekicibil\",\"doi\":\"10.1007/s10971-025-06679-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, the compounds of La<sub>2-x</sub>Na<sub>x</sub>NiMnO<sub>6</sub> (<i>x</i> = <i>0.0, 0.1, 0.2, 0.3, 0.5</i>, and <i>1.0</i>) double perovskite manganites have been produced by employing the sol-gel method to investigate their magnetocaloric effect. From X-Ray Diffraction analysis, all compounds crystallized in rhombohedral structure form with the <span>\\\\({\\\\rm{R}}\\\\bar{3}{\\\\rm{c}}\\\\)</span> space group confirmed using the Rietveld refinement technique. The compounds show a magnetic phase transition from ferromagnetic to paramagnetic according to the temperature-dependent magnetization measurement. The phase transition temperatures sharply increased with Na doping (<i>x</i> = <i>0.1</i>) to 277.8 K which can be considered as under room temperature level and then slowly decreased with further Na concentration to 262.3 K. Using an external magnetic field-dependent magnetization measurements, the isothermal magnetization curves were obtained, and these curves used to find the magnetic entropy change values, which give info about compounds’ characteristics of magnetic cooling performance. Under 5 T magnetic field change, the maximum magnetic entropy change value increased 10 times with a small amount of Na doping (<i>x</i> = <i>0.1</i>), and compounds’ values changed from <i>0.21</i> to <i>1.29</i> Jkg<sup>−1</sup>K<sup>−1</sup> for <i>x</i> = <i>0.0</i> to <i>1.0</i> compounds, respectively. Arrott plots were graphed by using isothermal magnetization curves to demonstrate all the compounds have a 2<sup>nd</sup> order magnetic phase transition which supports that these compounds can be candidates as magnetic refrigerants.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"114 JSST 30th Anniversary\",\"pages\":\"235 - 249\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-02-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10971-025-06679-8.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-025-06679-8\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-025-06679-8","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
摘要
本研究采用溶胶-凝胶法制备了 La2-xNaxNiMnO6(x = 0.0、0.1、0.2、0.3、0.5 和 1.0)双包晶锰矿化合物,以研究其磁致效应。通过 X 射线衍射分析,所有化合物都以斜方体结构形式结晶,并利用里特维尔德细化技术确认了其空间群为 \({/rm{R}}/bar{3}{rm{c}}/)。根据随温度变化的磁化测量结果,这些化合物显示出从铁磁性到顺磁性的磁性相变。相变温度随 Na 掺杂量(x = 0.1)的增加而急剧升高至 277.8 K,可视为室温水平以下,然后随着 Na 浓度的增加而缓慢降低至 262.3 K。在 5 T 的磁场变化下,少量 Na 掺杂(x = 0.1)时的最大磁熵变化值增加了 10 倍,x = 0.0 至 1.0 化合物的磁熵变化值分别为 0.21 至 1.29 Jkg-1K-1。利用等温磁化曲线绘制的阿罗特图表明,所有化合物都具有二阶磁性相变,这证明这些化合物可作为磁性制冷剂。
Unveiling A-site substituent’s influence on magnetocaloric response in La2-xNaxNiMnO6 (0.0 ≤ x ≤ 1.0) double perovskite manganite materials
In this study, the compounds of La2-xNaxNiMnO6 (x = 0.0, 0.1, 0.2, 0.3, 0.5, and 1.0) double perovskite manganites have been produced by employing the sol-gel method to investigate their magnetocaloric effect. From X-Ray Diffraction analysis, all compounds crystallized in rhombohedral structure form with the \({\rm{R}}\bar{3}{\rm{c}}\) space group confirmed using the Rietveld refinement technique. The compounds show a magnetic phase transition from ferromagnetic to paramagnetic according to the temperature-dependent magnetization measurement. The phase transition temperatures sharply increased with Na doping (x = 0.1) to 277.8 K which can be considered as under room temperature level and then slowly decreased with further Na concentration to 262.3 K. Using an external magnetic field-dependent magnetization measurements, the isothermal magnetization curves were obtained, and these curves used to find the magnetic entropy change values, which give info about compounds’ characteristics of magnetic cooling performance. Under 5 T magnetic field change, the maximum magnetic entropy change value increased 10 times with a small amount of Na doping (x = 0.1), and compounds’ values changed from 0.21 to 1.29 Jkg−1K−1 for x = 0.0 to 1.0 compounds, respectively. Arrott plots were graphed by using isothermal magnetization curves to demonstrate all the compounds have a 2nd order magnetic phase transition which supports that these compounds can be candidates as magnetic refrigerants.
期刊介绍:
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.