Transport and magnetic properties of delafossite CuAl 1− x  Mn  x  O 2  ceramics | Zendy

Kim Hyoun Soo | Zendy; Lee Byoung Seon | Zendy; Ji Sung Hwa | Zendy; Kim Hyojin | Zendy; Kim Dojin | Zendy; Ihm Young Eon | Zendy; Choo Woong Kil | Zendy

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Transport and magnetic properties of delafossite CuAl 1− x Mn x O 2 ceramics

Author(s) -

Kim Hyoun Soo,

Lee Byoung Seon,

Ji Sung Hwa,

Kim Hyojin,

Kim Dojin,

Ihm Young Eon,

Choo Woong Kil

Publication year - 2004

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200304519

Subject(s) - delafossite , antiferromagnetism , magnetization , ceramic , materials science , curie temperature , paramagnetism , sintering , analytical chemistry (journal) , ion , solid solution , doping , condensed matter physics , chemistry , ferromagnetism , metallurgy , magnetic field , physics , oxide , optoelectronics , organic chemistry , chromatography , quantum mechanics

We report on the transport and magnetic properties of Mn‐doped CuAlO 2 ceramics (CuAl 1− x Mn x O 2 , 0 ≤ x ≤ 0.05) fabricated by standard solid solution method in an air atmosphere at a sintering temperature of 1150 °C. The equilibrium solubility of Mn ions in CuAlO 2 was found to be as low as 3 mol%. Non‐doped CuAlO 2 ceramics were semiconducting with a hole concentration of ∼5.8 × 10 16 cm −3 and an increase of Mn ion rapidly reduced the hole concentration. The magnetization measurements for all CuAl 1− x Mn x O 2 samples showed paramagnetic behaviors and a negative value of the Curie–Weiss temperature corresponding to antiferromagnetic exchange coupling between Mn ions in delafossite CuAlO 2 lattice. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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