T Devender Reddy, G Padmasree, Sreedhar Yelipeddy, P Yadagiri Reddy, Ch Gopal Reddy
{"title":"Magnetic and 57Fe Mössbauer studies of praseodymium (Pr) substituted yttrium iron oxide (YFeO3) materials prepared by sol-gel technique","authors":"T Devender Reddy, G Padmasree, Sreedhar Yelipeddy, P Yadagiri Reddy, Ch Gopal Reddy","doi":"10.1007/s12034-025-03417-2","DOIUrl":null,"url":null,"abstract":"<div><p>Structural, magnetic and Mössbauer studies of praseodymium (Pr) doped in yttrium iron oxide (YFeO<sub>3</sub>) samples are presented in this paper. Samples having chemical formula of Pr<sub>x</sub>Y<sub>1−x</sub>FeO<sub>3</sub> (where, x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) were prepared by using sol-gel method. X-ray diffraction (XRD) and Raman spectroscopy techniques were used to characterize the samples. Rietveld refined XRD graphs show sharp intensity peaks which confirmed that the samples possess crystalline nature and have distorted orthorhombic structure. From Raman spectroscopic studies it was observed that the modes shifted towards lower wave number side confirming that Pr got substituted in place of Y. It was observed that with increase in Pr doping concentration in YFeO<sub>3,</sub> the magnetic nature of the samples decreased from weak ferromagnetic nature to anti ferromagnetic nature. <sup>57</sup>Fe Mössbauer spectroscopic studies showed a sextet overlapped by additional sextets which were generated from magnetic impurities. Isomer shift value of 0.27 mm s<sup>−1</sup> indicated that Fe ion was in its high spin ferric state. The hyperfine field (B<sub>hf</sub>) values were found to increase with increase in Pr concentration.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 2","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-025-03417-2","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}
引用次数: 0
Abstract
Structural, magnetic and Mössbauer studies of praseodymium (Pr) doped in yttrium iron oxide (YFeO3) samples are presented in this paper. Samples having chemical formula of PrxY1−xFeO3 (where, x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) were prepared by using sol-gel method. X-ray diffraction (XRD) and Raman spectroscopy techniques were used to characterize the samples. Rietveld refined XRD graphs show sharp intensity peaks which confirmed that the samples possess crystalline nature and have distorted orthorhombic structure. From Raman spectroscopic studies it was observed that the modes shifted towards lower wave number side confirming that Pr got substituted in place of Y. It was observed that with increase in Pr doping concentration in YFeO3, the magnetic nature of the samples decreased from weak ferromagnetic nature to anti ferromagnetic nature. 57Fe Mössbauer spectroscopic studies showed a sextet overlapped by additional sextets which were generated from magnetic impurities. Isomer shift value of 0.27 mm s−1 indicated that Fe ion was in its high spin ferric state. The hyperfine field (Bhf) values were found to increase with increase in Pr concentration.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.