Long-range order and spin-liquid states of polycrystalline Tb 2+xTi2-xO7+y

T. Taniguchi; H. Kadowaki; H. Takatsu; B. Fåk; J. Ollivier; T. Yamazaki; T. J. Sato; H. Yoshizawa; Y. Shimura; T. Sakakibara; T. Hong; K. Goto; L. R. Yaraskavitch; J. B. Kycia

doi:10.1103/PhysRevB.87.060408

Long-range order and spin-liquid states of polycrystalline Tb _2+xTi_2-xO_7+y

T. Taniguchi
, H. Kadowaki
, H. Takatsu
, B. Fåk
, J. Ollivier
, T. Yamazaki
, T. J. Sato
, H. Yoshizawa
, Y. Shimura
, T. Sakakibara
, T. Hong
, K. Goto
, L. R. Yaraskavitch
, J. B. Kycia

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

86 Scopus citations

Abstract

Low-temperature states of polycrystalline samples of a frustrated pyrochlore oxide Tb_2+xTi_2-xO_7+y have been investigated by specific heat, magnetic susceptibility, and neutron scattering experiments. We have found that this system can be tuned by a minute change of x from a spin-liquid state (x<x_c) to a partly ordered state with a small antiferromagnetic ordering of the order of 0.1μ_B. Specific heat shows a sharp peak at a phase transition at T_c=0.5 K for x=0.005. Magnetic excitation spectra for this sample change from a quasielastic to a gapped type through T_c. The possibility of a Jahn-Teller transition is discussed.

Original language	English
Article number	060408
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.87.060408
State	Published - Feb 25 2013

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Taniguchi, T., Kadowaki, H., Takatsu, H., Fåk, B., Ollivier, J., Yamazaki, T., Sato, T. J., Yoshizawa, H., Shimura, Y., Sakakibara, T., Hong, T., Goto, K., Yaraskavitch, L. R., & Kycia, J. B. (2013). Long-range order and spin-liquid states of polycrystalline Tb _2+xTi_2-xO_7+y. Physical Review B - Condensed Matter and Materials Physics, 87(6), Article 060408. https://doi.org/10.1103/PhysRevB.87.060408

@article{0cb4800ffe3240f89a73cacdb8e28f02,

title = "Long-range order and spin-liquid states of polycrystalline Tb 2+xTi2-xO7+y",

abstract = "Low-temperature states of polycrystalline samples of a frustrated pyrochlore oxide Tb2+xTi2-xO7+y have been investigated by specific heat, magnetic susceptibility, and neutron scattering experiments. We have found that this system can be tuned by a minute change of x from a spin-liquid state (xc) to a partly ordered state with a small antiferromagnetic ordering of the order of 0.1μB. Specific heat shows a sharp peak at a phase transition at Tc=0.5 K for x=0.005. Magnetic excitation spectra for this sample change from a quasielastic to a gapped type through Tc. The possibility of a Jahn-Teller transition is discussed.",

author = "T. Taniguchi and H. Kadowaki and H. Takatsu and B. F{\aa}k and J. Ollivier and T. Yamazaki and Sato, \{T. J.\} and H. Yoshizawa and Y. Shimura and T. Sakakibara and T. Hong and K. Goto and Yaraskavitch, \{L. R.\} and Kycia, \{J. B.\}",

year = "2013",

month = feb,

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doi = "10.1103/PhysRevB.87.060408",

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volume = "87",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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Taniguchi, T, Kadowaki, H, Takatsu, H, Fåk, B, Ollivier, J, Yamazaki, T, Sato, TJ, Yoshizawa, H, Shimura, Y, Sakakibara, T, Hong, T, Goto, K, Yaraskavitch, LR & Kycia, JB 2013, 'Long-range order and spin-liquid states of polycrystalline Tb _2+xTi_2-xO_7+y', Physical Review B - Condensed Matter and Materials Physics, vol. 87, no. 6, 060408. https://doi.org/10.1103/PhysRevB.87.060408

TY - JOUR

T1 - Long-range order and spin-liquid states of polycrystalline Tb 2+xTi2-xO7+y

AU - Taniguchi, T.

AU - Kadowaki, H.

AU - Takatsu, H.

AU - Fåk, B.

AU - Ollivier, J.

AU - Yamazaki, T.

AU - Sato, T. J.

AU - Yoshizawa, H.

AU - Shimura, Y.

AU - Sakakibara, T.

AU - Hong, T.

AU - Goto, K.

AU - Yaraskavitch, L. R.

AU - Kycia, J. B.

PY - 2013/2/25

Y1 - 2013/2/25

N2 - Low-temperature states of polycrystalline samples of a frustrated pyrochlore oxide Tb2+xTi2-xO7+y have been investigated by specific heat, magnetic susceptibility, and neutron scattering experiments. We have found that this system can be tuned by a minute change of x from a spin-liquid state (xc) to a partly ordered state with a small antiferromagnetic ordering of the order of 0.1μB. Specific heat shows a sharp peak at a phase transition at Tc=0.5 K for x=0.005. Magnetic excitation spectra for this sample change from a quasielastic to a gapped type through Tc. The possibility of a Jahn-Teller transition is discussed.

AB - Low-temperature states of polycrystalline samples of a frustrated pyrochlore oxide Tb2+xTi2-xO7+y have been investigated by specific heat, magnetic susceptibility, and neutron scattering experiments. We have found that this system can be tuned by a minute change of x from a spin-liquid state (xc) to a partly ordered state with a small antiferromagnetic ordering of the order of 0.1μB. Specific heat shows a sharp peak at a phase transition at Tc=0.5 K for x=0.005. Magnetic excitation spectra for this sample change from a quasielastic to a gapped type through Tc. The possibility of a Jahn-Teller transition is discussed.

UR - https://www.scopus.com/pages/publications/84874523942

U2 - 10.1103/PhysRevB.87.060408

DO - 10.1103/PhysRevB.87.060408

M3 - Article

AN - SCOPUS:84874523942

SN - 1098-0121

VL - 87

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 060408

ER -

Long-range order and spin-liquid states of polycrystalline Tb _2+xTi_2-xO_7+y

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