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Large spontaneous exchange bias in a weak ferromagnet Pb₆Ni₉(TeO₆)₅.

ABSTRACT: We report the magnetic and dielectric behavior of Pb₆Ni₉(TeO₆)₅, a new compound comprising the honeycomb-like layers of S = 1 spins, through detailed structural, magnetic and dielectric investigation. An antiferromagnetic-type transition at 25 K (T _N ) with weak-ferromagnetic behavior is revealed. Interestingly, a large value of coercive field of 1.32 T at 2 K is observed. The isothermal magnetization after zero-field-cooled condition, it exhibits the presence of large spontaneous exchange bias (SEB) with a magnitude of 0.19 T at 2 K; which is rare in single bulk materials, especially without external doping. The value of |H _EB| further enhances to 0.24 T under 16 T field-cooled condition, confirming the presence of large exchange bias in the material.

SUBMITTER: Koteswararao B

PROVIDER: S-EPMC5557810 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Large spontaneous exchange bias in a weak ferromagnet Pb6Ni9(TeO6)5.

Koteswararao B B Chakrabarty Tanmoy T Basu Tathamay T Hazra Binoy Krishna BK Srinivasarao P V PV Paulose P L PL Srinath S S

Scientific reports 20170815 1

We report the magnetic and dielectric behavior of Pb6Ni9(TeO6)5, a new compound comprising the honeycomb-like layers of S = 1 spins, through detailed structural, magnetic and dielectric investigation. An antiferromagnetic-type transition at 25 K (T N ) with weak-ferromagnetic behavior is revealed. Interestingly, a large value of coercive field of 1.32 T at 2 K is observed. The isothermal magnetization after zero-field-cooled condition, it ex ...[more]

PMID: 28811608

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