TY - JOUR
T1 - On the magnetic compensation effect of lithium-chromium ferrites Li 0.5CrxFe2.5-xO4 (0 ≤ x ≤ 1.55)
AU - Rais, A.
AU - Gismelseed, A. M.
AU - Al-Omari, I. A.
PY - 2005/11
Y1 - 2005/11
N2 - Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model taking into account the cation distributions obtained using the analysis of Mössbauer spectra.
AB - Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model taking into account the cation distributions obtained using the analysis of Mössbauer spectra.
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U2 - 10.1002/pssb.200541085
DO - 10.1002/pssb.200541085
M3 - Article
AN - SCOPUS:28144452324
VL - 242
SP - 2949
EP - 2955
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
SN - 0370-1972
IS - 14
ER -