Transport Properties and Magnetism of β-MnO2 View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1999

AUTHORS

H. Sato, T. Enoki, K. Wakiya, M. Isobe, Y. Ueda, T. Kiyama, Y. Wakabayashi, H. Nakao, Y. Murakami

ABSTRACT

A comprehensive study of transport properties and magnetism on β-MnO 2 reveals the strong coupling between the conduction electrons and the localized spins which are supposed to form a magnetic helix below T N ∼ 92 K. We also show the direct evidences of the helical magnetism by means of the measurements of the anisotropy in the magnetic susceptibility and the observation of x ray magnetic scatterings on a single crystal of β-MnO 2 . These results are consistent with proper-type helix model proposed by Yoshimori [J. Phys. Soc. Jpn. 14, p. 807 (1959)]. This model also qualitatively agrees with the anisotropy in magnetoresistance that appears below T N . The pitch of the magnetic helix is not commensurate to the lattice and it is slightly temperature dependent. The intensity of several Bragg peaks drastically changes at T N suggesting that the magnetic ordering is accompanied by a lattice distortion. More... »

PAGES

17

Identifiers

URI

http://scigraph.springernature.com/pub.10.1557/proc-602-17

DOI

http://dx.doi.org/10.1557/proc-602-17

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1067947792


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