The Ln2Cu2O5 ESR study (Ln= Y, TbLu)

A. A. Gippius; V. V. Moschalkov; Yu A. Koksharov; A. N. Tikhonov; B. V. Mill; Y. Zoubkova

doi:10.1016/0921-4534(89)91013-7

The Ln₂Cu₂O₅ ESR study (Ln= Y, TbLu)

A. A. Gippius, V. V. Moschalkov, Yu A. Koksharov, A. N. Tikhonov, B. V. Mill, Y. Zoubkova

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The method for the growth of large Ln₂Cu₂O₅ single crystals is developed. No ESR signals is found in all studied samples except Lu₂Cu₂O₅. Temperature dependences of Cu²⁺ ESR spectra of Lu₂Cu₂O₅ compounds were studied for both policrystalline and single crystal samples. The significant anisotropy of ESR spectra of Ln₂Cu₂O₅ single crystal was found. The g-factor main values were determined. The sharp broadening and disappearance of the ESR signals at temperatures below 20K seems to be caused by the enhancement of spin fluctuations in the vicinity of the antiferromagnetic transition in these compounds. The effective Cu²⁺ interaction with rare earth ions magnetic moments in Ln₂Cu₂O₅ compounds is supposed.

Original language	English
Pages (from-to)	253-254
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	162-164
Issue number	PART 1
DOIs	https://doi.org/10.1016/0921-4534(89)91013-7
Publication status	Published - Dec 1989
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "The Ln2Cu2O5 ESR study (Ln= Y, TbLu)",

abstract = "The method for the growth of large Ln2Cu2O5 single crystals is developed. No ESR signals is found in all studied samples except Lu2Cu2O5. Temperature dependences of Cu2+ ESR spectra of Lu2Cu2O5 compounds were studied for both policrystalline and single crystal samples. The significant anisotropy of ESR spectra of Ln2Cu2O5 single crystal was found. The g-factor main values were determined. The sharp broadening and disappearance of the ESR signals at temperatures below 20K seems to be caused by the enhancement of spin fluctuations in the vicinity of the antiferromagnetic transition in these compounds. The effective Cu2+ interaction with rare earth ions magnetic moments in Ln2Cu2O5 compounds is supposed.",

author = "Gippius, {A. A.} and Moschalkov, {V. V.} and Koksharov, {Yu A.} and Tikhonov, {A. N.} and Mill, {B. V.} and Y. Zoubkova",

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language = "English",

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T1 - The Ln2Cu2O5 ESR study (Ln= Y, TbLu)

AU - Gippius, A. A.

AU - Moschalkov, V. V.

AU - Koksharov, Yu A.

AU - Tikhonov, A. N.

AU - Mill, B. V.

AU - Zoubkova, Y.

PY - 1989/12

Y1 - 1989/12

N2 - The method for the growth of large Ln2Cu2O5 single crystals is developed. No ESR signals is found in all studied samples except Lu2Cu2O5. Temperature dependences of Cu2+ ESR spectra of Lu2Cu2O5 compounds were studied for both policrystalline and single crystal samples. The significant anisotropy of ESR spectra of Ln2Cu2O5 single crystal was found. The g-factor main values were determined. The sharp broadening and disappearance of the ESR signals at temperatures below 20K seems to be caused by the enhancement of spin fluctuations in the vicinity of the antiferromagnetic transition in these compounds. The effective Cu2+ interaction with rare earth ions magnetic moments in Ln2Cu2O5 compounds is supposed.

AB - The method for the growth of large Ln2Cu2O5 single crystals is developed. No ESR signals is found in all studied samples except Lu2Cu2O5. Temperature dependences of Cu2+ ESR spectra of Lu2Cu2O5 compounds were studied for both policrystalline and single crystal samples. The significant anisotropy of ESR spectra of Ln2Cu2O5 single crystal was found. The g-factor main values were determined. The sharp broadening and disappearance of the ESR signals at temperatures below 20K seems to be caused by the enhancement of spin fluctuations in the vicinity of the antiferromagnetic transition in these compounds. The effective Cu2+ interaction with rare earth ions magnetic moments in Ln2Cu2O5 compounds is supposed.

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