Influence of cobalt substitution at Ni site: On structural, magnetic, electrical and Mössbauer studies of SrNi2Fe16O27 W-type hexaferrites

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Ceramics International Pub Date : 2025-04-01 Epub Date: 2025-01-07 DOI:10.1016/j.ceramint.2025.01.114

Bachu Srikanth, Vankudothu Nagendar, M. Sreenath Reddy, Ch Gopal Reddy, P. Yadagiri Reddy

{"title":"Influence of cobalt substitution at Ni site: On structural, magnetic, electrical and Mössbauer studies of SrNi2Fe16O27 W-type hexaferrites","authors":"Bachu Srikanth, Vankudothu Nagendar, M. Sreenath Reddy, Ch Gopal Reddy, P. Yadagiri Reddy","doi":"10.1016/j.ceramint.2025.01.114","DOIUrl":null,"url":null,"abstract":"<div><div>W-type hexaferrites with chemical composition SrNi<sub>2-x</sub>Co<sub>x</sub>Fe<sub>16</sub>O<sub>27</sub> (where x = 0.0, 0.5, 1.0, and 1.5) were prepared using the solid-state method by sintering at 1300 °C. The samples were characterized with X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy and studied for magnetic, room-temperature, and low-temperature Mössbauer and dielectric measurements. The Rietveld-refined XRD data confirms single-phase material with a hexagonal structure having a <em>P</em>6<sub>3</sub>/<em>mmc</em> space group. The lattice parameters increased with increasing cobalt concentration. The elemental analysis and the oxidation state of the elements present in the samples were examined with XPS. Raman spectroscopic analysis shows shifting of peaks with the substitution of the cobalt at the nickel site. Magnetization data confirms the soft ferrimagnetic nature of the compounds. It is indicated that, saturation magnetization increases with the increasing of Co content. The isomer shift data from Mössbauer measurements suggest that, the Fe ions are present in +3 state. The conduction-hopping mechanism explains the notable dispersion in dielectric constant that is linked to loss peaks in temperature-dependent dielectric data.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12748-12757"},"PeriodicalIF":5.6000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884225001142","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/7 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

W-type hexaferrites with chemical composition SrNi_2-xCo_xFe₁₆O₂₇ (where x = 0.0, 0.5, 1.0, and 1.5) were prepared using the solid-state method by sintering at 1300 °C. The samples were characterized with X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy and studied for magnetic, room-temperature, and low-temperature Mössbauer and dielectric measurements. The Rietveld-refined XRD data confirms single-phase material with a hexagonal structure having a P6₃/mmc space group. The lattice parameters increased with increasing cobalt concentration. The elemental analysis and the oxidation state of the elements present in the samples were examined with XPS. Raman spectroscopic analysis shows shifting of peaks with the substitution of the cobalt at the nickel site. Magnetization data confirms the soft ferrimagnetic nature of the compounds. It is indicated that, saturation magnetization increases with the increasing of Co content. The isomer shift data from Mössbauer measurements suggest that, the Fe ions are present in +3 state. The conduction-hopping mechanism explains the notable dispersion in dielectric constant that is linked to loss peaks in temperature-dependent dielectric data.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

Ni位钴取代对SrNi2Fe16O27 w型六铁体结构、磁性、电学和Mössbauer研究的影响

采用1300℃固相烧结法制备了化学成分为SrNi2-xCoxFe16O27 （x = 0.0, 0.5, 1.0, 1.5）的w型六铁体。采用x射线衍射（XRD）、x射线光电子能谱（XPS）和拉曼光谱对样品进行了表征，并对样品进行了磁性、室温、低温Mössbauer和介电测量。Rietveld-refined XRD数据证实该材料为具有P63/mmc空间基团的六方结构单相材料。晶格参数随钴浓度的增加而增加。用XPS对样品进行了元素分析和氧化态分析。拉曼光谱分析表明，随着镍位钴的取代，峰发生了移位。磁化数据证实了化合物的软铁磁性。结果表明，饱和磁化强度随Co含量的增加而增大。Mössbauer测量的同分异构体位移数据表明，铁离子以+3态存在。跳导机制解释了介电常数的显著色散，该色散与温度相关介电数据中的损耗峰有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.