Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers

Kopcewicz M, Lucinski T, Stobiecki F, Reiss G (1999)
In: JOURNAL OF APPLIED PHYSICS. 85. AMER INST PHYSICS: 5039-5041.

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Abstract
The dependence of the giant magnetoresistance effect (GMR) on the interface structure in Fe/Cr multilayers was studied by magnetoresistivity and Mossbauer spectroscopy. The Fe/Cr multilayers consisting of Fe(6 nm) + [Cr(1.1 nm)/Fe(3 nm)](60) + Cr(1.1 nm) were deposited by dc magnetron sputtering. Samples were annealed for 1 h at temperatures ranging from 200 to 500 degrees C. The interface structure was characterized by conversion electron Mossbauer spectroscopy (CEMS). Various different Fe sites: the bulk, step and perfect interface positions were identified. The evolution of the fraction of Fe atoms in different environments vs annealing temperature revealed that annealing at 300 degrees C induces bulk and in-plane diffusion of atoms. Higher annealing temperature causes substantial roughening of the interface related to a strong bulk diffusion of atoms. Microstructural changes observed in the CEMS spectra correspond well to the GMR measurements which reveal an enhancement of magnetoresistivity in Fe/Cr multilayers annealed at about 300 degrees C and its decrease due to deterioration of the interface at higher annealing temperatures. (C) 1999 American Institute of Physics. [S0021-8979(99)19608-7].
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Kopcewicz M, Lucinski T, Stobiecki F, Reiss G. Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers. In: JOURNAL OF APPLIED PHYSICS. Vol 85. AMER INST PHYSICS; 1999: 5039-5041.
Kopcewicz, M., Lucinski, T., Stobiecki, F., & Reiss, G. (1999). Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers. JOURNAL OF APPLIED PHYSICS, 85(8), 5039-5041.
Kopcewicz, M., Lucinski, T., Stobiecki, F., and Reiss, G. (1999). “Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers” in JOURNAL OF APPLIED PHYSICS, vol. 85, (AMER INST PHYSICS), 5039-5041.
Kopcewicz, M., et al., 1999. Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers. In JOURNAL OF APPLIED PHYSICS. no.85 AMER INST PHYSICS, pp. 5039-5041.
M. Kopcewicz, et al., “Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers”, JOURNAL OF APPLIED PHYSICS, vol. 85, AMER INST PHYSICS, 1999, pp.5039-5041.
Kopcewicz, M., Lucinski, T., Stobiecki, F., Reiss, G.: Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers. JOURNAL OF APPLIED PHYSICS. 85, p. 5039-5041. AMER INST PHYSICS (1999).
Kopcewicz, M, Lucinski, T, Stobiecki, F, and Reiss, Günter. “Mossbauer study of the influence of thermal treatment on giant magnetoresistance and interface structure in Fe/Cr multilayers”. JOURNAL OF APPLIED PHYSICS. AMER INST PHYSICS, 1999.Vol. 85. 5039-5041.
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