The concentration metamagnetic transition in Tm1-x Tb xCo2 compounds

E. A. Sherstobitova; A. F. Gubkin; A. A. Ermakov; A. V. Zakharov; N. V. Baranov; Yu A. Dorofeev; A. N. Pirogov; A. A. Podlesnyak; V. Yu Pomyakushin

doi:10.1134/S1063783406070171

The concentration metamagnetic transition in Tm_1-x Tb _xCo₂ compounds

E. A. Sherstobitova, A. F. Gubkin, A. A. Ermakov, A. V. Zakharov, N. V. Baranov, Yu A. Dorofeev, A. N. Pirogov, A. A. Podlesnyak, V. Yu Pomyakushin

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

Abstract

The Tm_1-x Tb_xCo₂ (0 ≤ x ≤ 1) system was studied by measuring the magnetic susceptibility, electrical resistance, and neutron diffraction. In the compounds with 0 < x ≤ 0.15, an inhomogeneous magnetic state characterized by the existence of large regions (up to 100 Å in size) with short-range ferrimagnetic order was found to occur. The maximum of the residual electrical resistance observed in the compound with x = 0.1 at the magnetic ordering temperature was established to be due to the scattering of conduction electrons by localized spin fluctuations associated with f-d exchange fluctuations caused by the substitution of terbium for thulium. The increase in the terbium concentration to x ≥ 0.15 leads to a sharp increase in the Co sublattice magnetization and the establishment of a long-range ferromagnetic order, which indicates a concentration metamagnetic transition in the band subsystem.

Original language	English
Pages (from-to)	1321-1327
Number of pages	7
Journal	Physics of the Solid State
Volume	48
Issue number	7
DOIs	https://doi.org/10.1134/S1063783406070171
State	Published - Jul 2006
Externally published	Yes

Funding

This work was supported in part by the Swiss National Scientific Foundation (SCOPES grant no. 7 IP 65598), the Department of Physical Sciences of the Russian Academy of Sciences (program “Neutron Studies on Material Structure and the Fundamental Properties of Matter,” project no. 14, Ural Division, RAS, contract no. 11/05), and the Russian Foundation for Basic Research (project Ural no. 04-02-96 082).

Funders	Funder number
Swiss National Scientific Foundation	7 IP 65598
Ural Division
Russian Academy of Medical Sciences
Russian Foundation for Basic Research	04-02-96 082
Russian Academy of Sciences	11/05

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title = "The concentration metamagnetic transition in Tm1-x Tb xCo2 compounds",

abstract = "The Tm1-x TbxCo2 (0 ≤ x ≤ 1) system was studied by measuring the magnetic susceptibility, electrical resistance, and neutron diffraction. In the compounds with 0 < x ≤ 0.15, an inhomogeneous magnetic state characterized by the existence of large regions (up to 100 {\AA} in size) with short-range ferrimagnetic order was found to occur. The maximum of the residual electrical resistance observed in the compound with x = 0.1 at the magnetic ordering temperature was established to be due to the scattering of conduction electrons by localized spin fluctuations associated with f-d exchange fluctuations caused by the substitution of terbium for thulium. The increase in the terbium concentration to x ≥ 0.15 leads to a sharp increase in the Co sublattice magnetization and the establishment of a long-range ferromagnetic order, which indicates a concentration metamagnetic transition in the band subsystem.",

author = "Sherstobitova, {E. A.} and Gubkin, {A. F.} and Ermakov, {A. A.} and Zakharov, {A. V.} and Baranov, {N. V.} and Dorofeev, {Yu A.} and Pirogov, {A. N.} and Podlesnyak, {A. A.} and Pomyakushin, {V. Yu}",

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AU - Sherstobitova, E. A.

AU - Gubkin, A. F.

AU - Ermakov, A. A.

AU - Zakharov, A. V.

AU - Baranov, N. V.

AU - Dorofeev, Yu A.

AU - Pirogov, A. N.

AU - Podlesnyak, A. A.

AU - Pomyakushin, V. Yu

PY - 2006/7

Y1 - 2006/7

N2 - The Tm1-x TbxCo2 (0 ≤ x ≤ 1) system was studied by measuring the magnetic susceptibility, electrical resistance, and neutron diffraction. In the compounds with 0 < x ≤ 0.15, an inhomogeneous magnetic state characterized by the existence of large regions (up to 100 Å in size) with short-range ferrimagnetic order was found to occur. The maximum of the residual electrical resistance observed in the compound with x = 0.1 at the magnetic ordering temperature was established to be due to the scattering of conduction electrons by localized spin fluctuations associated with f-d exchange fluctuations caused by the substitution of terbium for thulium. The increase in the terbium concentration to x ≥ 0.15 leads to a sharp increase in the Co sublattice magnetization and the establishment of a long-range ferromagnetic order, which indicates a concentration metamagnetic transition in the band subsystem.

AB - The Tm1-x TbxCo2 (0 ≤ x ≤ 1) system was studied by measuring the magnetic susceptibility, electrical resistance, and neutron diffraction. In the compounds with 0 < x ≤ 0.15, an inhomogeneous magnetic state characterized by the existence of large regions (up to 100 Å in size) with short-range ferrimagnetic order was found to occur. The maximum of the residual electrical resistance observed in the compound with x = 0.1 at the magnetic ordering temperature was established to be due to the scattering of conduction electrons by localized spin fluctuations associated with f-d exchange fluctuations caused by the substitution of terbium for thulium. The increase in the terbium concentration to x ≥ 0.15 leads to a sharp increase in the Co sublattice magnetization and the establishment of a long-range ferromagnetic order, which indicates a concentration metamagnetic transition in the band subsystem.

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EP - 1327

JO - Physics of the Solid State

JF - Physics of the Solid State

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ER -

The concentration metamagnetic transition in Tm_1-x Tb _xCo₂ compounds

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