Inhomogeneous magnetism in La-doped CaMnO3. (I) Nanometric-scale spin clusters and long-range spin canting

Eduardo Granado; Chris D. Ling; John J. Neumeier; Jeff W. Lynn; Dimitri N. Argyriou

doi:10.1103/PhysRevB.68.134440

Inhomogeneous magnetism in La-doped CaMnO3. (I) Nanometric-scale spin clusters and long-range spin canting

Strongly Correlated Electrons 2009-11-10 v1 Materials Science

Authors: Eduardo Granado , Chris D. Ling , John J. Neumeier , Jeff W. Lynn , Dimitri N. Argyriou

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Abstract

Neutron measurements on Ca{1-x}La{x}MnO3 (0.00 <= x <= 0.20) reveal the development of a liquid-like spatial distribution of magnetic droplets of average size ~10 Angstroms, the concentration of which is proportional to x (one cluster per ~60 doped electrons). In addition, a long-range ordered ferromagnetic component is observed for ~0.05 < x < ~0.14. This component is perpendicularly coupled to the simple G-type antiferromagnetic (G-AFM) structure of the undoped compound, which is a signature of a G-AFM + FM spin-canted state. The possible relationship between cluster formation and the stabilization of a long-range spin-canting for intermediate doping is discussed.

Keywords

La-doped CaMnO3 magnetic droplets spin canting G-type antiferromagnetism ferromagnetic component

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@article{arxiv.cond-mat/0303311,
  title  = {Inhomogeneous magnetism in La-doped CaMnO3. (I) Nanometric-scale spin clusters and long-range spin canting},
  author = {Eduardo Granado and Chris D. Ling and John J. Neumeier and Jeff W. Lynn and Dimitri N. Argyriou},
  journal= {arXiv preprint arXiv:cond-mat/0303311},
  year   = {2009}
}

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Submitted to Physical Review B

Inhomogeneous magnetism in La-doped CaMnO3. (I) Nanometric-scale spin clusters and long-range spin canting

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