{"title":"Zn0.8Co0.2Fe₂O₄铁氧体纳米粒子的合成与表征：磁性和结构研究","authors":"Hero S. Ahmed, Sarkawt A. Hussen, Ali M. Mohammad","doi":"10.1007/s10971-025-06779-5","DOIUrl":null,"url":null,"abstract":"<div><p>Temperature variations highly influence the structural, cation redistribution and magnetic characteristics of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> spinel ferrite during the synthesis. However, the temperature-dependent properties of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> were not sufficiently explored. Understanding the influence of temperature on cation distribution, crystallite size, and magnetic properties is crucial to optimize the material’s performance in many technological uses. This study explores the temperature-dependent characteristic of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> ferrite to enhance its suitability for electronic and magnetic device applications. The sol-gel auto-combustion method was utilized for synthesizing Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> nano-ferrites, and then the temperature dependence of the structural property, cation distribution and magnetic behavior were explored. The X-ray patterns revealed that the crystallite size and lattice parameters increased by razing calcination temperature. The calculated crystallite sizes ranged from 23.78 nm to 38.02 nm, confirming the crystalline structure in the nm ranges of the prepared ferrite materials. Fourier transform infrared spectroscopy provides the formation of a cubic spinel structure with high-frequency (υ<sub>1</sub>) ranges between 534.3 and 549.61 cm<sup>−1</sup> and low-frequency bands (υ<sub>2</sub>) appearing between 348.8 and 389.53 cm<sup>−1</sup>. These frequency bands appeared due to the stretching vibration of metal-oxygen ions at both A-sites and B-sites. Field emission scanning electron microscopy showed that all calcined samples have almost spherical shapes with a high degree of agglomeration. Using a Vibration Sample Magnetometer, the magnetic property showed that the synthesized nano-ferrites have soft magnetization at ambient temperature. The magnetic saturation values decreased with calcination temperature starting at 18.225 emu/g to 7.702 emu/g from 400 °C to 600 °C, respectively. The magnetic moment reduced from 0.782 to 0.3306 with increasing calcination temperature due to particle growth at higher temperatures, leading to cation distribution between A and B sites and weakening of superexchange coupling.</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":"115 1","pages":"17 - 29"},"PeriodicalIF":3.2000,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and characterization of Zn0.8Co0.2Fe₂O₄ ferrite nanoparticles: Magnetic and structural insights\",\"authors\":\"Hero S. Ahmed, Sarkawt A. Hussen, Ali M. Mohammad\",\"doi\":\"10.1007/s10971-025-06779-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Temperature variations highly influence the structural, cation redistribution and magnetic characteristics of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> spinel ferrite during the synthesis. However, the temperature-dependent properties of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> were not sufficiently explored. Understanding the influence of temperature on cation distribution, crystallite size, and magnetic properties is crucial to optimize the material’s performance in many technological uses. This study explores the temperature-dependent characteristic of Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> ferrite to enhance its suitability for electronic and magnetic device applications. The sol-gel auto-combustion method was utilized for synthesizing Zn<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub> nano-ferrites, and then the temperature dependence of the structural property, cation distribution and magnetic behavior were explored. The X-ray patterns revealed that the crystallite size and lattice parameters increased by razing calcination temperature. The calculated crystallite sizes ranged from 23.78 nm to 38.02 nm, confirming the crystalline structure in the nm ranges of the prepared ferrite materials. Fourier transform infrared spectroscopy provides the formation of a cubic spinel structure with high-frequency (υ<sub>1</sub>) ranges between 534.3 and 549.61 cm<sup>−1</sup> and low-frequency bands (υ<sub>2</sub>) appearing between 348.8 and 389.53 cm<sup>−1</sup>. These frequency bands appeared due to the stretching vibration of metal-oxygen ions at both A-sites and B-sites. Field emission scanning electron microscopy showed that all calcined samples have almost spherical shapes with a high degree of agglomeration. Using a Vibration Sample Magnetometer, the magnetic property showed that the synthesized nano-ferrites have soft magnetization at ambient temperature. The magnetic saturation values decreased with calcination temperature starting at 18.225 emu/g to 7.702 emu/g from 400 °C to 600 °C, respectively. The magnetic moment reduced from 0.782 to 0.3306 with increasing calcination temperature due to particle growth at higher temperatures, leading to cation distribution between A and B sites and weakening of superexchange coupling.</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\":\"115 1\",\"pages\":\"17 - 29\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-05-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"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/s10971-025-06779-5\",\"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/s10971-025-06779-5","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}
Synthesis and characterization of Zn0.8Co0.2Fe₂O₄ ferrite nanoparticles: Magnetic and structural insights
Temperature variations highly influence the structural, cation redistribution and magnetic characteristics of Zn0.8Co0.2Fe2O4 spinel ferrite during the synthesis. However, the temperature-dependent properties of Zn0.8Co0.2Fe2O4 were not sufficiently explored. Understanding the influence of temperature on cation distribution, crystallite size, and magnetic properties is crucial to optimize the material’s performance in many technological uses. This study explores the temperature-dependent characteristic of Zn0.8Co0.2Fe2O4 ferrite to enhance its suitability for electronic and magnetic device applications. The sol-gel auto-combustion method was utilized for synthesizing Zn0.8Co0.2Fe2O4 nano-ferrites, and then the temperature dependence of the structural property, cation distribution and magnetic behavior were explored. The X-ray patterns revealed that the crystallite size and lattice parameters increased by razing calcination temperature. The calculated crystallite sizes ranged from 23.78 nm to 38.02 nm, confirming the crystalline structure in the nm ranges of the prepared ferrite materials. Fourier transform infrared spectroscopy provides the formation of a cubic spinel structure with high-frequency (υ1) ranges between 534.3 and 549.61 cm−1 and low-frequency bands (υ2) appearing between 348.8 and 389.53 cm−1. These frequency bands appeared due to the stretching vibration of metal-oxygen ions at both A-sites and B-sites. Field emission scanning electron microscopy showed that all calcined samples have almost spherical shapes with a high degree of agglomeration. Using a Vibration Sample Magnetometer, the magnetic property showed that the synthesized nano-ferrites have soft magnetization at ambient temperature. The magnetic saturation values decreased with calcination temperature starting at 18.225 emu/g to 7.702 emu/g from 400 °C to 600 °C, respectively. The magnetic moment reduced from 0.782 to 0.3306 with increasing calcination temperature due to particle growth at higher temperatures, leading to cation distribution between A and B sites and weakening of superexchange coupling.
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
