Study of Colossal Magnetoresistance and Hall Effect in Manganite La0.8 Sr0.2 MnO3

Authors

  • R. Fernández Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú
  • E. Monteblanco Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú
  • H. Sánchez Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú
  • R. Ochoa Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú
  • A. Gutarra Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú

Keywords:

Colossal magnetoresistance, Hall effect, manganites

Abstract

La1_xSrxMn03 manganites were prepared by a citrate method with controllable content of Sr according to inductively coupled plasma - atomic emission spectrometry (ICP-AES) and with perovskite structure according to x-ray diffraction (DRX) [9]. For the present work we have utilized x = O, 2. The sample was compacted and sintetized into a disc shape. Metallic electrodes were placed on it in order to measure electric resistance variations as a function of the temperature in the presence of an external magnetic field. The measuring range went from O to 1, 3 T for external magnetic field and from 87 to 330K for temperature. The experimental results showed a Colossal Magnetoresistance (CMR) value of 50% near 300 K. An increment in the critical temperature of approxi­mately 20°C in the presence of a 1,3T magnetic field has been seen. The Hall effect measurements showed a good agreement with the model that proposes an additional contribution to the Classic Hall Effect, which consists of a carrier dispersion on account of their interaction with the magnetization M

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Published

2006-06-01

How to Cite

Fernández, R., Monteblanco, E., Sánchez, H., Ochoa, R., & Gutarra, A. (2006). Study of Colossal Magnetoresistance and Hall Effect in Manganite La0.8 Sr0.2 MnO3. Journal of the Science Faculty @ UNI, 10(1), 53–57. Retrieved from https://revistas.uni.edu.pe/index.php/revciuni/article/view/2415

Issue

Vol. 10 No. 1 (2006)

Section

Artículos

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