Suppression of Spin-Glass State in PrB6

M.A. Anisimov; A.V. Bogach; V.V. Glushkov; S.V. Demishev; N.A. Samarin; N.Y. Shitsevalova; A.V. Levchenko; V.B. Filipov; A.V. Kuznetsov; N.E. Sluchanko

doi:10.4028/www.scientific.net/SSP.190.221

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HomeSolid State PhenomenaSolid State Phenomena Vol. 190Suppression of Spin-Glass State in PrB6

Suppression of Spin-Glass State in PrB₆

Abstract:

The comprehensive study of transverse magnetoresistance (MR) and magnetization has been carried out on the high quality single crystals of PrB₆ in the wide range of temperatures 2-40K and magnetic fields up to 80kOe. In order to estimate the role of boron vacancies in the formation of the new spin-glass (SG) phase detected by Alekseev et al. below 20K the experiments were carried out on the ordinary (initial state) and annealed single crystals of PrB₆. The data obtained demonstrate the appearance of spontaneous magnetization below T_SG21.3K with M~1.6 emu/mol for initial state and the absence of spontaneous magnetization for the annealed PrB₆ samples. On the contrary, quite similar behavior of MR was detected for various samples of PrB₆. Our results suggest the existence of the aggregated boron vacancies which provoke the new SG phase formation in PrB₆ at T_SG.

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Solid State Phenomena (Volume 190)

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221-224

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https://doi.org/10.4028/www.scientific.net/SSP.190.221

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Online since:

June 2012

Authors:

M.A. Anisimov, A.V. Bogach, V.V. Glushkov, S.V. Demishev, N.A. Samarin, N.Y. Shitsevalova, A.V. Levchenko, V.B. Filipov, A.V. Kuznetsov, N.E. Sluchanko

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Boron Vacancies, Field Hysteresis, Hexaborides, Magnetization, Magnetoresistance

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