Wasp – Waisted loop and spin frustration in Dy2?xEuxTi2O7 pyrochlore
نویسندگان
چکیده
The Raman spectroscopy and AC DC magnetization of Dy2?xEuxTi2O7 pyrochlore materials have been investigated. A systematic shift in all phonon modes with higher Eu content observed spectra confirms the successful substitution Dy3+ ion by Eu3+ ions. High concentration induces exchange interactions between atoms alters crystal-field Dy2?xEuxTi2O7. Rich samples (x = 1.5, 1.8 1.9) show existence wasp-waisted hysteresis loop which is explained on basis dipolar field, anisotropy interaction spin frustration present samples. Interestingly, susceptibility shows two single freezing transitions corresponding to ions respectively rich only.
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ژورنال
عنوان ژورنال: Journal of Magnetism and Magnetic Materials
سال: 2021
ISSN: ['0304-8853', '1873-4766']
DOI: https://doi.org/10.1016/j.jmmm.2020.167364