Coexisting Magnetic Order and Cooperative Paramagnetism in the Stuffed Pyrochlore Tb2+xTi2-2xNbxO7

Published

February 18, 2010

Author(s)

Benjamin Ueland, Jason S. Gardner, A. J. Williams, M. L. Dahlberg, J.G. Kim, Yiming Qiu, John R. Copley, P. Schiffer, R J. Cava

Abstract

Neutron scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb_2+xTi_2-2xNb_xO₇. We find that despite the introduction of chemical disorder and increasingly antiferromagnetic interactions, cooperative paramagnetic behavior exists for all x, and for Tb₃NbO₇ an antiferromagnetically ordered state coexists with cooperative paramagnetic behavior, without applying any external fields or pressure. These results are a new thrust into the study of spin liquids and cooperative paramagnets, opening a new route to study this unique cooperative behavior.

Citation

Physical Review Letters

Volume

81

Issue

6

Pub Type

Journals

Keywords

Magnetic frustration, spin liquid, antiferromagnetic order

Citation

, B. , , J. , , A. , , M. , Kim, J. , Qiu, Y. , Copley, J. , Schiffer, P. and Cava, R. (2010), Coexisting Magnetic Order and Cooperative Paramagnetism in the Stuffed Pyrochlore Tb_2+xTi_2-2xNb_xO₇, Physical Review Letters (Accessed April 18, 2024)