TY - JOUR
T1 - Partially disordered state with short-range spin correlation in S=5/2 classical triangular antiferromagnet Ag2FeO2
AU - Yoshida, H. K.
AU - Matsuda, M.
AU - Stone, M. B.
AU - Dela Cruz, C. R.
AU - Furubayashi, T.
AU - Onoda, M.
AU - Takayama-Muromachi, E.
AU - Isobe, M.
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2020/11/10
Y1 - 2020/11/10
N2 - A triangular-lattice antiferromagnet of Ag2FeO2 was synthesized under high pressure. Its magnetism was studied in terms of electrical resistivity, magnetic susceptibility, heat capacity, powder neutron scattering, and Mössbauer spectroscopy. The magnetic state of Ag2FeO2 changes successively through a second-order phase transition at Tp=36 K and a crossover at Tc=20 K. A partially disordered (PD) state appears below Tp, in which ≈2/3 spins are ordered and the remaining ≈1/3 spins fluctuate, which state persists at least down to 5 K. The spin correlation length starts to grow at Tp; however, it remains very short (≈27 Å) below Tc. This exotic magnetism is concerned with strong frustration in the classic antiferromagnetic triangular lattice.
AB - A triangular-lattice antiferromagnet of Ag2FeO2 was synthesized under high pressure. Its magnetism was studied in terms of electrical resistivity, magnetic susceptibility, heat capacity, powder neutron scattering, and Mössbauer spectroscopy. The magnetic state of Ag2FeO2 changes successively through a second-order phase transition at Tp=36 K and a crossover at Tc=20 K. A partially disordered (PD) state appears below Tp, in which ≈2/3 spins are ordered and the remaining ≈1/3 spins fluctuate, which state persists at least down to 5 K. The spin correlation length starts to grow at Tp; however, it remains very short (≈27 Å) below Tc. This exotic magnetism is concerned with strong frustration in the classic antiferromagnetic triangular lattice.
UR - http://www.scopus.com/inward/record.url?scp=85115900668&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.2.043211
DO - 10.1103/PhysRevResearch.2.043211
M3 - Article
AN - SCOPUS:85115900668
SN - 2643-1564
VL - 2
JO - Physical Review Research
JF - Physical Review Research
IS - 4
M1 - 043211
ER -