Structural, magnetic and electrical properties of gadolinium doped cobalt ferrite nanoparticles: Role of Gd doping level

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2024-09-12 DOI:10.1016/j.nanoso.2024.101327

I.G. Jhala , Apexa Maru , Laxmi Hathiya , Harshal B. Desai , N.A. Shah , P.S. Solanki , Ashish R. Tanna , H.H. Joshi

{"title":"Structural, magnetic and electrical properties of gadolinium doped cobalt ferrite nanoparticles: Role of Gd doping level","authors":"I.G. Jhala , Apexa Maru , Laxmi Hathiya , Harshal B. Desai , N.A. Shah , P.S. Solanki , Ashish R. Tanna , H.H. Joshi","doi":"10.1016/j.nanoso.2024.101327","DOIUrl":null,"url":null,"abstract":"<div>In this communication, effect of Gd doping for CoFe2–xGdxO4 (CFGO) nanoparticles has been investigated for structural, magnetic and electrical properties. X–ray diffraction (XRD) patterns reveal the presence of matrix like CFGO phase fraction with coexisting GdFeO3 (GFO) smaller crystallites and α–Fe2O3 (FO) phase fraction. Variation in crystallite size (D) for all three phases has been explored from the analysis on XRD patterns. Magnetic nature has been understood on the basis of lattice disorder, magnetic linkages between different ions of CFGO lattices that conduces magnetic characteristic of three different phases coexist within the CFGO nanoparticle lattices. Influence of frequency, temperature and Gd doping level on different electrical behaviors has been understood on the bases of various relaxation processes, charge conduction mechanism, correlated barrier hopping (CBH) mechanism, maximum barrier height, activation energy and structure–property correlations.</div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101327"},"PeriodicalIF":5.4500,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano-Structures & Nano-Objects","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352507X24002385","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}

引用次数: 0

Abstract

In this communication, effect of Gd doping for CoFe_2–xGd_xO₄ (CFGO) nanoparticles has been investigated for structural, magnetic and electrical properties. X–ray diffraction (XRD) patterns reveal the presence of matrix like CFGO phase fraction with coexisting GdFeO₃ (GFO) smaller crystallites and α–Fe₂O₃ (FO) phase fraction. Variation in crystallite size (D) for all three phases has been explored from the analysis on XRD patterns. Magnetic nature has been understood on the basis of lattice disorder, magnetic linkages between different ions of CFGO lattices that conduces magnetic characteristic of three different phases coexist within the CFGO nanoparticle lattices. Influence of frequency, temperature and Gd doping level on different electrical behaviors has been understood on the bases of various relaxation processes, charge conduction mechanism, correlated barrier hopping (CBH) mechanism, maximum barrier height, activation energy and structure–property correlations.

查看原文本刊更多论文

掺杂钆的钴铁氧体纳米粒子的结构、磁性和电性：钆掺杂水平的作用

在这篇论文中，研究了掺杂钆对 CoFe2-xGdxO4 (CFGO) 纳米粒子结构、磁性和电性的影响。X 射线衍射（XRD）图显示，CFGO 的基体相与 GdFeO3（GFO）较小的晶粒和 α-Fe2O3（FO）相共存。通过对 XRD 图样的分析，探索了所有三相的晶体尺寸（D）变化。磁性是根据 CFGO 晶格的晶格无序、不同离子之间的磁性连接来理解的，这导致了三种不同相共存于 CFGO 纳米粒子晶格中的磁性特征。根据各种弛豫过程、电荷传导机制、相关势垒跳变（CBH）机制、最大势垒高度、活化能和结构-性能相关性，了解了频率、温度和掺钕水平对不同电学行为的影响。

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分钟内获得全文求助全文

来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .