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Title: Cr-doped TiSe 2 - A layered dichalcogenide spin glass

We report the magnetic characterization of the Cr-doped layered dichalcogenide TiSe 2. The temperature dependent magnetic susceptibilities are typical of those seen in geometrically frustrated insulating antiferromagnets. The Cr moment is close to the spin-only value, and the Curie–Weiss temperatures (θ cw) are between –90 and –230 K. Freezing of the spin system, which is glassy, characterized by peaks in the ac and dc susceptibility and specific heat, does not occur until below T/θ cw = 0.05. The CDW transition seen in the resistivity for pure TiSe 2 is still present for 3% Cr substitution but is absent by 10% substitution, above which the materials are metallic and p-type. Structural refinements, magnetic characterization, and chemical considerations indicate that the materials are of the type Ti 1–xCr xSe 2-x/2 for 0 ≤ x ≤ 0.6.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3] ;  [3] ;  [1]
  1. Princeton Univ., Princeton, NJ (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Louisiana State Univ., Baton Rouge, LA (United States)
Publication Date:
Report Number(s):
BNL-111838-2016-JA
Journal ID: ISSN 0897-4756; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 27; Journal Issue: 19; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society (ACS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; geometric frustrated magnet; dichalcogenide; solid solution; Ti1–xCrxSe2-x/2
OSTI Identifier:
1240695

Luo, Huixia, Tao, Jing, Krizan, Jason W., Seibel, Elizabeth M., Xie, Weiwei, Sahasrabudhe, Girija S., Bergman, Susanna L., Phelan, Brendan F., Wang, Zhen, Zhang, Jiandi, and Cava, R. J.. Cr-doped TiSe2 - A layered dichalcogenide spin glass. United States: N. p., Web. doi:10.1021/acs.chemmater.5b03091.
Luo, Huixia, Tao, Jing, Krizan, Jason W., Seibel, Elizabeth M., Xie, Weiwei, Sahasrabudhe, Girija S., Bergman, Susanna L., Phelan, Brendan F., Wang, Zhen, Zhang, Jiandi, & Cava, R. J.. Cr-doped TiSe2 - A layered dichalcogenide spin glass. United States. doi:10.1021/acs.chemmater.5b03091.
Luo, Huixia, Tao, Jing, Krizan, Jason W., Seibel, Elizabeth M., Xie, Weiwei, Sahasrabudhe, Girija S., Bergman, Susanna L., Phelan, Brendan F., Wang, Zhen, Zhang, Jiandi, and Cava, R. J.. 2015. "Cr-doped TiSe2 - A layered dichalcogenide spin glass". United States. doi:10.1021/acs.chemmater.5b03091. https://www.osti.gov/servlets/purl/1240695.
@article{osti_1240695,
title = {Cr-doped TiSe2 - A layered dichalcogenide spin glass},
author = {Luo, Huixia and Tao, Jing and Krizan, Jason W. and Seibel, Elizabeth M. and Xie, Weiwei and Sahasrabudhe, Girija S. and Bergman, Susanna L. and Phelan, Brendan F. and Wang, Zhen and Zhang, Jiandi and Cava, R. J.},
abstractNote = {We report the magnetic characterization of the Cr-doped layered dichalcogenide TiSe2. The temperature dependent magnetic susceptibilities are typical of those seen in geometrically frustrated insulating antiferromagnets. The Cr moment is close to the spin-only value, and the Curie–Weiss temperatures (θcw) are between –90 and –230 K. Freezing of the spin system, which is glassy, characterized by peaks in the ac and dc susceptibility and specific heat, does not occur until below T/θcw = 0.05. The CDW transition seen in the resistivity for pure TiSe2 is still present for 3% Cr substitution but is absent by 10% substitution, above which the materials are metallic and p-type. Structural refinements, magnetic characterization, and chemical considerations indicate that the materials are of the type Ti1–xCrxSe2-x/2 for 0 ≤ x ≤ 0.6.},
doi = {10.1021/acs.chemmater.5b03091},
journal = {Chemistry of Materials},
number = 19,
volume = 27,
place = {United States},
year = {2015},
month = {9}
}