Possible weak magnetism in MB (M: Ca, Ba) probed by muon spin relaxation and muon level-crossing resonance

Kuroiwa, Sogo*; Takagiwa, Hiroyuki*; Yamazawa, Maki*; Akimitsu, Jun*; Koda, Akihiro*; Kadono, Ryosuke*; Oishi, Kazuki; Higemoto, Wataru ; Watanabe, Isao*

The temperature dependence of muon spin relaxation rate exhibits a significant increase below 130 K in CaB and 110 K in BaB, while no sigh of spontaneous muon precession signal under a zero field is observed. Moreover, the electric field gradient at the boron site measured by muon level-crossing resonance exhibits a step like change at 110 K in CaB. These results suggest a change in electronic state and the associated emergence of weak random magnetism below 110-130 K in these alkaline earth hexaborides.

Language	:	English
Journal	:	Science and Technology of Advanced Materials
Volume	:	7
Number	:	1
Pages	:	p.12 - 16
Publication Year/Month	:	2006/01
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Paper URL	:	https://doi.org/10.1016/j.stam.2005.11.012
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Keywords	:	no keyword
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Registration No. : AA20060911
JAEA Abstracts No. : 35000621
Paper Submission No. : 2098

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