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<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&#xa0;mm&#xa0;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>

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Magnetic and 57Fe Mössbauer studies of praseodymium (Pr) substituted yttrium iron oxide (YFeO3) materials prepared by sol-gel technique

  • 期刊论文

  • 发表日期：

    2025年4月30日

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  • T Devender Reddy,
  • G Padmasree,
  • Sreedhar Yelipeddy,
  • P Yadagiri Reddy,
  • Ch Gopal Reddy

摘要

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.