| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevB.63.174413 |
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| Author | Search for: Moreno, N. O.; Search for: Pagliuso, P. G.; Search for: Rettori, C.; Search for: Gardner, J. S.; Search for: Sarrao, J. L.; Search for: Thompson, J. D.; Search for: Huber, D. L.; Search for: Mitchell, J. F.; Search for: Martinez, J. J.; Search for: Oseroff, S. B. |
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| Format | Text, Article |
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| Abstract | We have performed electron spin resonance (ESR) and dc magnetization measurements on single crystals of La2(1-x)Sr1+2xMn2O7 up to 800 K with special emphasis on the x=0.4 composition. The ESR linewidth shows behavior similar to that observed in the three-dimensional perovskites and above ~500 K can be described by a universal expression ΔHpp(T)=[C/Tχ(T)]ΔHpp(∞). The linewidth and the resonance field become anisotropic below ~500 K. The anisotropy in the resonance field is proportional to the magnetization M, and we concluded that it is intrinsic to the system. We show that demagnetization effects can explain only part of the anisotropy. The remainder arises from short-range uniaxial terms in the Hamiltonian that are associated with the crystal field and Dzialozhinsky-Moriya interactions. The anisotropy in the linewidth is attributed to the easy-plane ferromagnetic ordering, which also arises from the short-range anisotropy. |
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| Publication date | 2001-04-05 |
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| In | |
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| Language | English |
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| NRC publication | This is a non-NRC publication"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC. |
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| NPARC number | 12327737 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | b85daa13-6c42-4ca4-94e5-babda0709e03 |
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| Record created | 2009-09-10 |
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| Record modified | 2020-03-27 |
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