Abstract
A Mössbauer spectroscopy study was made on Ho3Fe5-xAlxO12 (x=0.0, 0.05, 0.7). X‐ray diffraction patterns indicate that the samples with x=0.0 and 0.05 have the garnet structure, while the sample with x=0.7 has an additional noncubic structural phase. The room temperature spectrum for samples with x=0.0 and 0.05 consists of two magnetic components corresponding to the octahedral and tetrahedral sites with hyperfine magnetic fields (Bhf) of 50 T and 40 T, respectively. For x=0.7 we observe a new magnetic component with Bhf= 45 T, a reduction in the intensity and broadening of the tetrahedral component, and the evolution of a nonmagnetic central component. These variations are evidently due to the addition of aluminium to the system. At liquid nitrogen temperature the samples with x=0.0 and 0.05 are nearly identical. It was also observed that the increase in Bhf for the octahedral site is smaller than that for the tetrahedral site as the temperature is lowered to 80 K.
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References
M.A. Gilleo, Ferromagnetic Insulators: Garnets, Ferromagnetic Materials, Vol. 2, ed. E.P. Wohlfarth (North-Holland, Amsterdam, 1980).
M. Guillot, F. Ticheou, A. Marchand and P. Feldmann, Z. Phys. B 56 (1984) 29.
M.S. Lataifeh and A.-F. Lehlooh, Solid State Commun. 97 (1996) 805–807.
S.H. Lee, K.P. Chae, S.W. Hong and Y.B. Lee, Solid State Commun. 83 (1992) 97–100.
A. Seidel, L. Haggstrom and D. Rodic, Hyp. Interact. 73 (1992) 265–275.
W. Meyer, W. Sturhahn and E. Gerdau, Hyp. Interact. 94 (1994) 2059–2065.
R. Pauthenet, Ann. Phys. 3 (1957) 424.
G. Winkler, Magnetic Garnets (Vieweg, Braunschweig–Wiesbaden, 1981).
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Lataifeh, M.S., Lehlooh, A.D. & Mahmood, S. Mössbauer spectroscopy of Al substituted Fe in holmium iron garnet. Hyperfine Interactions 122, 253–258 (1999). https://doi.org/10.1023/A:1012630730577
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DOI: https://doi.org/10.1023/A:1012630730577