Anomalous exchange mechanism in Gd monopnictides

T. Kasuya; D. X. Li

doi:10.1016/S0921-4526(96)00619-9

Anomalous exchange mechanism in Gd monopnictides

T. Kasuya, D. X. Li

Materials Processing and Characterization Division

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

4 Citations (Scopus)

Abstract

Nearest and next nearest neighbor exchange constants I₁ and I₂ were obtained for Gd monopnictides GdX_p. Even though relative energy levels are different substantially, lattice constant dependences, as well as the absolute values, are nearly equal to those in Eu chalcogenides EuX_C. In particular, strong ferromagnetic I₁ in GdN similar to EuO was explained by the process involving 4f⁸ configuration. On the other hand, contrary to electron doped EuX_C, no ferromagnetic effect is observed in GdX_p due to semimetallic carriers. This is also seen as a weak spin disorder scattering. This anomalous behavior was explained as cancellation of intra and intersite d-f scatterings characteristic to GdX_p.

Original language	English
Pages (from-to)	472-474
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	230-232
DOIs	https://doi.org/10.1016/S0921-4526(96)00619-9
Publication status	Published - 1997 Feb

Keywords

Ferromagnetic interaction
Gd monopnictides
Mixing mechanism
d-f exchange interaction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(96)00619-9

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title = "Anomalous exchange mechanism in Gd monopnictides",

abstract = "Nearest and next nearest neighbor exchange constants I1 and I2 were obtained for Gd monopnictides GdXp. Even though relative energy levels are different substantially, lattice constant dependences, as well as the absolute values, are nearly equal to those in Eu chalcogenides EuXC. In particular, strong ferromagnetic I1 in GdN similar to EuO was explained by the process involving 4f8 configuration. On the other hand, contrary to electron doped EuXC, no ferromagnetic effect is observed in GdXp due to semimetallic carriers. This is also seen as a weak spin disorder scattering. This anomalous behavior was explained as cancellation of intra and intersite d-f scatterings characteristic to GdXp.",

keywords = "Ferromagnetic interaction, Gd monopnictides, Mixing mechanism, d-f exchange interaction",

author = "T. Kasuya and Li, {D. X.}",

year = "1997",

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doi = "10.1016/S0921-4526(96)00619-9",

language = "English",

volume = "230-232",

pages = "472--474",

journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Anomalous exchange mechanism in Gd monopnictides

AU - Kasuya, T.

AU - Li, D. X.

PY - 1997/2

Y1 - 1997/2

N2 - Nearest and next nearest neighbor exchange constants I1 and I2 were obtained for Gd monopnictides GdXp. Even though relative energy levels are different substantially, lattice constant dependences, as well as the absolute values, are nearly equal to those in Eu chalcogenides EuXC. In particular, strong ferromagnetic I1 in GdN similar to EuO was explained by the process involving 4f8 configuration. On the other hand, contrary to electron doped EuXC, no ferromagnetic effect is observed in GdXp due to semimetallic carriers. This is also seen as a weak spin disorder scattering. This anomalous behavior was explained as cancellation of intra and intersite d-f scatterings characteristic to GdXp.

AB - Nearest and next nearest neighbor exchange constants I1 and I2 were obtained for Gd monopnictides GdXp. Even though relative energy levels are different substantially, lattice constant dependences, as well as the absolute values, are nearly equal to those in Eu chalcogenides EuXC. In particular, strong ferromagnetic I1 in GdN similar to EuO was explained by the process involving 4f8 configuration. On the other hand, contrary to electron doped EuXC, no ferromagnetic effect is observed in GdXp due to semimetallic carriers. This is also seen as a weak spin disorder scattering. This anomalous behavior was explained as cancellation of intra and intersite d-f scatterings characteristic to GdXp.

KW - Ferromagnetic interaction

KW - Gd monopnictides

KW - Mixing mechanism

KW - d-f exchange interaction

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Anomalous exchange mechanism in Gd monopnictides

Abstract

Keywords

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