Canted antiferromagnetism and spin glasslike behavior in a family of two-dimensional organic/inorganic nanocomposites

Journal Article · Mon Jun 01 04:00:00 EDT 1998 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.367801· OSTI ID:624864

Girtu, M A; Wynn, C M ^[1]; Fujita, W; Awaga, K ^[2]; Epstein, A J ^[1]

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1. Department of Physics, The Ohio State University, Columbus, Ohio43210-1106 (United States)
2. Department of Basic Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo153 (Japan)

We report magnetic properties of a new class of hybrid organic/inorganic layered materials, Cu{sub 2}(OH){sub 3}(C{sub m}H{sub 2m+1}COO), m=7, 9, and 11. The frequency dependence of the linear ac susceptibility and the irreversibility in the field-cooled/zero-field-cooled magnetization show that the geometrical frustration of the triangular lattice is strong enough to cause glassiness. The strong peak in the second harmonic of the nonlinear ac susceptibility indicates that frustration is not sufficient to prevent the system from developing a spontaneous moment. We propose that the interplay of Heisenberg antiferromagnetic exchange and Dzyaloshinskii{endash}Moriya interaction leads to the unusual coexistence of glassiness and canted antiferromagnetism. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 624864
• Report Number(s): CONF-980102--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 83; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
COMPOSITE MATERIALS
COPPER COMPOUNDS
HARMONIC GENERATION
HEISENBERG MODEL
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
NONLINEAR OPTICS
ORGANOMETALLIC COMPOUNDS
SPIN GLASS STATE