Effect of Yttrium substitution on the structural and magnetic properties of GdCrO^sub 3

We report the preparation of single phase samples of Gd1-xYxCrO3 (x = 0-0.30) compounds using the sol-gel method. Analysis of X-ray diffraction patterns shows a systematic decrease in lattice parameters a, c and volume of the unit cell with increase in Y concentration. Raman spectra recorded at room...

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Published inJournal of magnetism and magnetic materials Vol. 448; p. 355
Main Authors Dash, Bibhuti B, Ravi, S
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier BV 15.02.2018
Subjects
Antiferromagnetism
Chemical compounds
Diffraction
Diffraction patterns
Ferromagnetism
Gadolinium
Lattice parameters
Lattice vibration
Magnetic properties
Magnetism
Magnetization reversal
Raman spectra
Sol-gel processes
Temperature
X-rays
Yttrium
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Abstract We report the preparation of single phase samples of Gd1-xYxCrO3 (x = 0-0.30) compounds using the sol-gel method. Analysis of X-ray diffraction patterns shows a systematic decrease in lattice parameters a, c and volume of the unit cell with increase in Y concentration. Raman spectra recorded at room temperature shows a systematic shift of various modes towards higher wave number suggesting the presence of lattice distortion. The temperature variation of magnetization measurements show the presence of magnetization reversal and the magnetic compensation temperature is found to decrease upon Y doping. The origin of magnetization reversal is explained by considering competition between the paramagnetic moment of Gd3+ ions under the influence of negative internal field and the weak ferromagnetic component of Cr3+ ions due to canted antiferromagnetic ordering.
AbstractList We report the preparation of single phase samples of Gd1-xYxCrO3 (x = 0-0.30) compounds using the sol-gel method. Analysis of X-ray diffraction patterns shows a systematic decrease in lattice parameters a, c and volume of the unit cell with increase in Y concentration. Raman spectra recorded at room temperature shows a systematic shift of various modes towards higher wave number suggesting the presence of lattice distortion. The temperature variation of magnetization measurements show the presence of magnetization reversal and the magnetic compensation temperature is found to decrease upon Y doping. The origin of magnetization reversal is explained by considering competition between the paramagnetic moment of Gd3+ ions under the influence of negative internal field and the weak ferromagnetic component of Cr3+ ions due to canted antiferromagnetic ordering.
Author Ravi, S
Dash, Bibhuti B
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Snippet We report the preparation of single phase samples of Gd1-xYxCrO3 (x = 0-0.30) compounds using the sol-gel method. Analysis of X-ray diffraction patterns shows...
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SubjectTerms Antiferromagnetism
Chemical compounds
Diffraction
Diffraction patterns
Ferromagnetism
Gadolinium
Lattice parameters
Lattice vibration
Magnetic properties
Magnetism
Magnetization reversal
Raman spectra
Sol-gel processes
Temperature
X-rays
Yttrium
Title Effect of Yttrium substitution on the structural and magnetic properties of GdCrO^sub 3
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Volume 448
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