Angular dependence of asymmetric magnetoimpedance in exchange biased NiFe/IrMn multilayers

Autor: Silva, Ricardo Barreto da Silva, Corrêa, Marcio Assolin, Silva, Edimilson Felix da, Mori, Thiago José de Almeida, Della Pace, Rafael Domingues, Pinto, Roberta Dutra de Oliveira, Viegas, Alexandre Da Cas, Bohn, Felipe, Sommer, Rubem Luis
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Popis: We investigate the angular dependence of asymmetric magnetoimpedance of NiFe/IrMn multilayers and explore the possibility of tuning the linear region of the magnetoimpedance curves by modifying the angle between the applied external magnetic field and exchange bias field, and probe current frequency. We quantify the sensitivity by calculating the ratio jDZj=jDHj at low magnetic fields as a function of the frequency for samples cut with different orientations and show that considerable values in the linear region around zero field can be reached. The results extend the possibilities for application of exchange biased magnetoimpedance multilayers as probe element for the development and improvement of auto-biased linear magnetic field sensors We investigate the angular dependence of asymmetric magnetoimpedance of NiFe/IrMn multilayers and explore the possibility of tuning the linear region of the magnetoimpedance curves by modifying the angle between the applied external magnetic field and exchange bias field, and probe current frequency. We quantify the sensitivity by calculating the ratio jDZj=jDHj at low magnetic fields as a function of the frequency for samples cut with different orientations and show that considerable values in the linear region around zero field can be reached. The results extend the possibilities for application of exchange biased magnetoimpedance multilayers as probe element for the development and improvement of auto-biased linear magnetic field sensor
Databáze: OpenAIRE
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