{"title":"新型层状钙钛矿/ w -六铁氧体纳米复合材料的组成及抗菌性能","authors":"Rania Ramadan, M. M. Arman","doi":"10.1007/s00339-025-08395-0","DOIUrl":null,"url":null,"abstract":"<div><p>This paper discusses the synthesis of W-type hexaferrite and lanthanum perovskite nanoparticles using the auto-combustion method. Structural analysis conducted through X-ray powder diffraction (XRD) confirms the formation of polycrystalline nanoparticles exhibiting W-type hexaferrite (HF) and orthorhombic perovskite structures. Optical characterization via UV-visible spectroscopy reveals band gaps of 3.2 eV for direct transitions and 2.2 eV for indirect transitions. Scanning electron microscopy (SEM) images illustrate the microstructure, showing grains with prominent hexagonal faces and a spongy morphology, with sizes ranging from 40 to 70 nm. Additionally, antiferromagnetic properties are demonstrated by the hysteresis loop obtained from vibrating sample magnetometer (VSM) measurements. The antibacterial and antifungal activities of the nanosized composite BaCo<sub>2</sub>Fe<sub>16</sub>O<sub>27</sub> and LaFeO<sub>3</sub> have been evaluated against various gram-positive and gram-negative bacterial strains.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 5","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-025-08395-0.pdf","citationCount":"0","resultStr":"{\"title\":\"Composition and antibacterial properties of newly developed layered perovskite/W-hexaferrite nanocomposite materials\",\"authors\":\"Rania Ramadan, M. M. Arman\",\"doi\":\"10.1007/s00339-025-08395-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This paper discusses the synthesis of W-type hexaferrite and lanthanum perovskite nanoparticles using the auto-combustion method. Structural analysis conducted through X-ray powder diffraction (XRD) confirms the formation of polycrystalline nanoparticles exhibiting W-type hexaferrite (HF) and orthorhombic perovskite structures. Optical characterization via UV-visible spectroscopy reveals band gaps of 3.2 eV for direct transitions and 2.2 eV for indirect transitions. Scanning electron microscopy (SEM) images illustrate the microstructure, showing grains with prominent hexagonal faces and a spongy morphology, with sizes ranging from 40 to 70 nm. Additionally, antiferromagnetic properties are demonstrated by the hysteresis loop obtained from vibrating sample magnetometer (VSM) measurements. The antibacterial and antifungal activities of the nanosized composite BaCo<sub>2</sub>Fe<sub>16</sub>O<sub>27</sub> and LaFeO<sub>3</sub> have been evaluated against various gram-positive and gram-negative bacterial strains.</p></div>\",\"PeriodicalId\":473,\"journal\":{\"name\":\"Applied Physics A\",\"volume\":\"131 5\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-04-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s00339-025-08395-0.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00339-025-08395-0\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00339-025-08395-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Composition and antibacterial properties of newly developed layered perovskite/W-hexaferrite nanocomposite materials
This paper discusses the synthesis of W-type hexaferrite and lanthanum perovskite nanoparticles using the auto-combustion method. Structural analysis conducted through X-ray powder diffraction (XRD) confirms the formation of polycrystalline nanoparticles exhibiting W-type hexaferrite (HF) and orthorhombic perovskite structures. Optical characterization via UV-visible spectroscopy reveals band gaps of 3.2 eV for direct transitions and 2.2 eV for indirect transitions. Scanning electron microscopy (SEM) images illustrate the microstructure, showing grains with prominent hexagonal faces and a spongy morphology, with sizes ranging from 40 to 70 nm. Additionally, antiferromagnetic properties are demonstrated by the hysteresis loop obtained from vibrating sample magnetometer (VSM) measurements. The antibacterial and antifungal activities of the nanosized composite BaCo2Fe16O27 and LaFeO3 have been evaluated against various gram-positive and gram-negative bacterial strains.
期刊介绍：
Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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