Abstract
X-ray diffraction, infrared, and Mossbauer spectroscopy techniques are used to investigate Li0.5+0.5xGexFe2.5-1.5xO4; x ≤ 0.5. The polycrystalline samples show single-phase spinel structure. The lattice constant for x ≥ 0.2 is found to be nearly constant, but smaller than for x = 0. A small component of Fe2+ has been detected in the IR spectra. The Mossbauer absorption patterns give magnetic sextets superimposed on a paramagnetic component that increases with increasing germanium content. The average hyperfine field at the A-site is found to decrease faster than at the B-site. A consistent interpretation of the information obtained from the different methods is provided. It is also suggested to give a qualitative explanation for the differential variation of the average hyperfine fields at the two sites on the basis of supertransferred hyperfine interactions.
| Original language | English |
|---|---|
| Pages (from-to) | 685-690 |
| Number of pages | 6 |
| Journal | Physica Status Solidi (A) Applied Research |
| Volume | 149 |
| Issue number | 2 |
| Publication status | Published - Jun 1995 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Effect of Ge4+ substitution in lithium ferrites. / Mazen, S. A.; Yousif, A. A.; Elzain, M. E.
In: Physica Status Solidi (A) Applied Research, Vol. 149, No. 2, 06.1995, p. 685-690.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of Ge4+ substitution in lithium ferrites
AU - Mazen, S. A.
AU - Yousif, A. A.
AU - Elzain, M. E.
PY - 1995/6
Y1 - 1995/6
N2 - X-ray diffraction, infrared, and Mossbauer spectroscopy techniques are used to investigate Li0.5+0.5xGexFe2.5-1.5xO4; x ≤ 0.5. The polycrystalline samples show single-phase spinel structure. The lattice constant for x ≥ 0.2 is found to be nearly constant, but smaller than for x = 0. A small component of Fe2+ has been detected in the IR spectra. The Mossbauer absorption patterns give magnetic sextets superimposed on a paramagnetic component that increases with increasing germanium content. The average hyperfine field at the A-site is found to decrease faster than at the B-site. A consistent interpretation of the information obtained from the different methods is provided. It is also suggested to give a qualitative explanation for the differential variation of the average hyperfine fields at the two sites on the basis of supertransferred hyperfine interactions.
AB - X-ray diffraction, infrared, and Mossbauer spectroscopy techniques are used to investigate Li0.5+0.5xGexFe2.5-1.5xO4; x ≤ 0.5. The polycrystalline samples show single-phase spinel structure. The lattice constant for x ≥ 0.2 is found to be nearly constant, but smaller than for x = 0. A small component of Fe2+ has been detected in the IR spectra. The Mossbauer absorption patterns give magnetic sextets superimposed on a paramagnetic component that increases with increasing germanium content. The average hyperfine field at the A-site is found to decrease faster than at the B-site. A consistent interpretation of the information obtained from the different methods is provided. It is also suggested to give a qualitative explanation for the differential variation of the average hyperfine fields at the two sites on the basis of supertransferred hyperfine interactions.
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M3 - Article
VL - 149
SP - 685
EP - 690
JO - Physica Status Solidi (A) Applied Research
JF - Physica Status Solidi (A) Applied Research
SN - 0031-8965
IS - 2
ER -