Coexisting magnetic order and cooperative paramagnetism in the stuffed pyrochlore Tb2+x Ti2-2x Nbx O7

B. G. Ueland; J. S. Gardner; A. J. Williams; M. L. Dahlberg; J. G. Kim; Y. Qiu; J. R.D. Copley; P. Schiffer; R. J. Cava

doi:10.1103/PhysRevB.81.060408

Coexisting magnetic order and cooperative paramagnetism in the stuffed pyrochlore Tb2+x Ti2-2x Nbx O7

B. G. Ueland, J. S. Gardner, A. J. Williams, M. L. Dahlberg, J. G. Kim, Y. Qiu, J. R.D. Copley, P. Schiffer, R. J. Cava

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

Abstract

Neutron-scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb2+x Ti2-2x Nbx O7. We find that despite the introduction of chemical disorder and increasingly antiferromagnetic interactions, a spin-glass transition does not occur for T≥1.5K and cooperative paramagnetic behavior exists for all x. For x=1, Tb3 NbO7, an antiferromagnetically ordered state coexisting with cooperative paramagnetic behavior is seen without applying any external fields or pressure, a situation advantageous for studying this cooperative behavior.

Original language	English (US)
Article number	060408
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.81.060408
State	Published - Feb 18 2010
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.81.060408

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title = "Coexisting magnetic order and cooperative paramagnetism in the stuffed pyrochlore Tb2+x Ti2-2x Nbx O7",

abstract = "Neutron-scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb2+x Ti2-2x Nbx O7. We find that despite the introduction of chemical disorder and increasingly antiferromagnetic interactions, a spin-glass transition does not occur for T≥1.5K and cooperative paramagnetic behavior exists for all x. For x=1, Tb3 NbO7, an antiferromagnetically ordered state coexisting with cooperative paramagnetic behavior is seen without applying any external fields or pressure, a situation advantageous for studying this cooperative behavior.",

author = "Ueland, {B. G.} and Gardner, {J. S.} and Williams, {A. J.} and Dahlberg, {M. L.} and Kim, {J. G.} and Y. Qiu and Copley, {J. R.D.} and P. Schiffer and Cava, {R. J.}",

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T1 - Coexisting magnetic order and cooperative paramagnetism in the stuffed pyrochlore Tb2+x Ti2-2x Nbx O7

AU - Ueland, B. G.

AU - Gardner, J. S.

AU - Williams, A. J.

AU - Dahlberg, M. L.

AU - Kim, J. G.

AU - Qiu, Y.

AU - Copley, J. R.D.

AU - Schiffer, P.

AU - Cava, R. J.

PY - 2010/2/18

Y1 - 2010/2/18

N2 - Neutron-scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb2+x Ti2-2x Nbx O7. We find that despite the introduction of chemical disorder and increasingly antiferromagnetic interactions, a spin-glass transition does not occur for T≥1.5K and cooperative paramagnetic behavior exists for all x. For x=1, Tb3 NbO7, an antiferromagnetically ordered state coexisting with cooperative paramagnetic behavior is seen without applying any external fields or pressure, a situation advantageous for studying this cooperative behavior.

AB - Neutron-scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb2+x Ti2-2x Nbx O7. We find that despite the introduction of chemical disorder and increasingly antiferromagnetic interactions, a spin-glass transition does not occur for T≥1.5K and cooperative paramagnetic behavior exists for all x. For x=1, Tb3 NbO7, an antiferromagnetically ordered state coexisting with cooperative paramagnetic behavior is seen without applying any external fields or pressure, a situation advantageous for studying this cooperative behavior.

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Coexisting magnetic order and cooperative paramagnetism in the stuffed pyrochlore Tb2+x Ti2-2x Nbx O7

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