{"title":"纳米晶Mn3O4的结构与电学研究","authors":"Raghavendra Sagar","doi":"10.1080/07315171.2018.1564875","DOIUrl":null,"url":null,"abstract":"Abstract In this paper, we report synthesis, structural, microstructure and electrical study of Mn3O4. Manganese oxide in the form of Mn3O4 was prepared by co-precipitation technique using manganese nitrate as source at the calcination temperature of 400 °C. The crystal structure has been refined by least squire fitting method using powder X-ray diffraction data. The structure refinement showed the formation of single phase with no any secondary phases. The lattice parameter and cell volume has been calculated manually from standard equations and verified by UNITCELL software program. The particle size was also determined from the XRD pattern using Scherrer’s equation. The microstructure of calcined and sintered sample was characterized by scanning electron microscopy. The temperature dependent dc conductivity of the Mn3O4 pellet was studied in the temperature range between room temperature to 500 °C. The conductivity of this spinal was very less at room temperature and increased with increasing temperature exhibiting negative temperature of coefficient of resistance behavior with activation energy 0.91eV.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"4 1","pages":"94 - 98"},"PeriodicalIF":1.3000,"publicationDate":"2018-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"Structural and electrical studies of nanocrystalline Mn3O4\",\"authors\":\"Raghavendra Sagar\",\"doi\":\"10.1080/07315171.2018.1564875\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract In this paper, we report synthesis, structural, microstructure and electrical study of Mn3O4. Manganese oxide in the form of Mn3O4 was prepared by co-precipitation technique using manganese nitrate as source at the calcination temperature of 400 °C. The crystal structure has been refined by least squire fitting method using powder X-ray diffraction data. The structure refinement showed the formation of single phase with no any secondary phases. The lattice parameter and cell volume has been calculated manually from standard equations and verified by UNITCELL software program. The particle size was also determined from the XRD pattern using Scherrer’s equation. The microstructure of calcined and sintered sample was characterized by scanning electron microscopy. The temperature dependent dc conductivity of the Mn3O4 pellet was studied in the temperature range between room temperature to 500 °C. The conductivity of this spinal was very less at room temperature and increased with increasing temperature exhibiting negative temperature of coefficient of resistance behavior with activation energy 0.91eV.\",\"PeriodicalId\":50451,\"journal\":{\"name\":\"Ferroelectrics Letters Section\",\"volume\":\"4 1\",\"pages\":\"94 - 98\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2018-11-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ferroelectrics Letters Section\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1080/07315171.2018.1564875\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ferroelectrics Letters Section","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1080/07315171.2018.1564875","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Structural and electrical studies of nanocrystalline Mn3O4
Abstract In this paper, we report synthesis, structural, microstructure and electrical study of Mn3O4. Manganese oxide in the form of Mn3O4 was prepared by co-precipitation technique using manganese nitrate as source at the calcination temperature of 400 °C. The crystal structure has been refined by least squire fitting method using powder X-ray diffraction data. The structure refinement showed the formation of single phase with no any secondary phases. The lattice parameter and cell volume has been calculated manually from standard equations and verified by UNITCELL software program. The particle size was also determined from the XRD pattern using Scherrer’s equation. The microstructure of calcined and sintered sample was characterized by scanning electron microscopy. The temperature dependent dc conductivity of the Mn3O4 pellet was studied in the temperature range between room temperature to 500 °C. The conductivity of this spinal was very less at room temperature and increased with increasing temperature exhibiting negative temperature of coefficient of resistance behavior with activation energy 0.91eV.
期刊介绍:
Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals.
Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.