INVESTIGATION OF DOPING AND PARTICLE SIZE EFFECT ON STRUCTURAL, MAGNETIC AND MAGNETORESISTANCE PROPERTIES OF MANGANITES

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HAKIMI M.; KAMELI P.; SALAMATI H.; ESHRAGHI M.; AZAMI AZADEH

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Journal: Iranian Journal of Physics Research Year:2008 | Volume:8 | Issue:2 Page(s): 79-98

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Title

INVESTIGATION OF DOPING AND PARTICLE SIZE EFFECT ON STRUCTURAL, MAGNETIC AND MAGNETORESISTANCE PROPERTIES OF MANGANITES

Author(s)

Keywords

MAGNETORESISTANCEQ3

MANGANITESQ3

LSMOQ3

Abstract

In this paper after introduction of MANGANITES, we have studied the effect of particle size and doping on structural, magnetic and MAGNETORESISTANCE of LSMO manganite samples. The MAGNETORESISTANCE measurements show that, by decreasing the particle size LFMR increases. Also the results show that the LFMR increases at low doping levels and decreases at high doping levels. The spin dependent tunneling and scattering at the grain boundaries is the origin of increasing the LFMR at low doping levels. Also the substitution of impurity ions at Mn sites and subsequently weakling of double exchange is responsible for decreasing of LFMR at high doping level.

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APA: Copy

HAKIMI, M., KAMELI, P., SALAMATI, H., ESHRAGHI, M., & AZAMI, AZADEH. (2008). INVESTIGATION OF DOPING AND PARTICLE SIZE EFFECT ON STRUCTURAL, MAGNETIC AND MAGNETORESISTANCE PROPERTIES OF MANGANITES. IRANIAN JOURNAL OF PHYSICS RESEARCH, 8(2), 79-98. SID. https://sid.ir/paper/1911/en

Vancouver: Copy

HAKIMI M., KAMELI P., SALAMATI H., ESHRAGHI M., AZAMI AZADEH. INVESTIGATION OF DOPING AND PARTICLE SIZE EFFECT ON STRUCTURAL, MAGNETIC AND MAGNETORESISTANCE PROPERTIES OF MANGANITES. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2008;8(2):79-98. Available from: https://sid.ir/paper/1911/en

IEEE: Copy

M. HAKIMI, P. KAMELI, H. SALAMATI, M. ESHRAGHI, and AZADEH AZAMI, “INVESTIGATION OF DOPING AND PARTICLE SIZE EFFECT ON STRUCTURAL, MAGNETIC AND MAGNETORESISTANCE PROPERTIES OF MANGANITES,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 8, no. 2, pp. 79–98, 2008, [Online]. Available: https://sid.ir/paper/1911/en

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