Field induced spin transitions and large magnetoresistance in the quasi-one-dimensional magnet Ca3Co2O6

Koji Yamada 2Jiaolian Luo 2Zentarou Honda 2Hiroko Katori 1

1. Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako-Shi, Saitama 351-0198, Japan
2. Saitama University, 255 Shimo-ookubo, Sakuraku, Saitama 338-8570, Japan

Abstract

Magnetic and magnetoresistance effect of needle shaped crystal and slightly Co rich Ca3Co2O6 was investigated in a temperature range between 2 K and 100 K and in a DC magnetic field range less than 7 T and in pulsed fields less than 20 T. We found 1/3 ms and 2/3 ms plateaus of the magnetization for the full magnetization ms and large negative and positive magnetoresistance peaks of 10% at the same magnetic fields, respectively.

 

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Presentation: oral at E-MRS Fall Meeting 2005, Symposium D, by Koji Yamada
See On-line Journal of E-MRS Fall Meeting 2005

Submitted: 2005-06-02 06:25
Revised:   2009-06-07 00:44