Formation of zircon-type DyCrO4 and its magnetic properties

Ughade, Supriya; Joshi, Bhavana; Poddar, Pankaj

doi:10.1016/j.ceramint.2022.05.113

Cited by 2 publications

(2 citation statements)

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“…The polycrystalline samples of the monazite‐type LaCrO 4 and zircon‐type RCrO 4 (R = Nd, Sm, Gd, Dy, Ho, Er, Tm, Yb) and YCrO 4 were synthesized using a hydrolytic sol–gel synthesis method. As mentioned in our previous work, the reaction sequence was followed to prepare RCrO 4 compounds 26 . The starting materials of R (III) nitrate hydrate (R [NO 3 ] 3 .…”

Section: Methodsmentioning

confidence: 99%

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A systematic study of rare‐earth ions size‐dependent structural phase transition from monazite to zircon‐type in rare earth chromates using Raman spectroscopy

Ughade

Poddar

2023

J Raman Spectroscopy

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Rare earth chromates (RCrO 4 ) undergo monazite to zircon-type structural phase transition due to a decreased rare-earth ion size. They also exhibit an intermediate mixed phase. However, there is no systematic study on the influence of structural distortion on their phononic behavior, which is quite sensitive to subtle environmental variations. A change in the room temperature phononic spectrum was studied in the family of RCrO 4 compounds, where R was varied from La to Yb using Raman modes. With an increase in the atomic number from Nd to Yb for zircon-type phases, the external translational and rotational modes were observed to shift towards lower and higher wavenumbers, respectively. At the same time, all internal vibrational modes shifted towards higher phonon energies. A comparison between Raman modes for monazite, intermediate, and zircon-type RCrO 4 phases showed a gradual shift in the internal modes towards a higher wavenumber. The confirmation of the change in Raman modes with the decreasing radius was found by comparing the rare-earth elements in DyCrO 4 and LaCrO 4 with non-rare-earth elements in YCrO 4 . K E Y W O R D Smonazite-type, Raman spectroscopy, rare earth chromates (RCrO 4 ), YCrO 4 , zircon type

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Section: Methodsmentioning

confidence: 99%

“…As mentioned in our previous work, the reaction sequence was followed to prepare RCrO 4 compounds. 26 The starting materials of R (III) nitrate hydrate (R [NO 3 ] 3 . H 2 O, Aldrich, 99.9% metal basis), chromium nitrate (Cr [NO 3 ] 3 , Aldrich, 99.9%), and oxalic acid (H 2 C 2 O 4 .…”

Section: Sample Preparationmentioning

confidence: 99%