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  Paramagnetic to ferromagnetic phase transition in lightly Fe-doped Cr2B

Schoop, L., Hirschberger, M., Tao, J., Felser, C., Ong, N. P., & Cava, R. J. (2014). Paramagnetic to ferromagnetic phase transition in lightly Fe-doped Cr2B. Physical Review B, 89(22): 224417, pp. 1-7. doi:10.1103/PhysRevB.89.224417.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-1A4B-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-1A5E-F
Genre: Journal Article

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 Creators:
Schoop, Leslie1, Author              
Hirschberger, Max2, Author
Tao, Jing2, Author
Felser, Claudia3, Author              
Ong, N. P.2, Author
Cava, R. J.2, Author
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2external, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Cr2B displays temperature-independent paramagnetism. We induce ferromagnetism by replacing less than 3% of the Cr atoms by Fe. By the lowest Fe doping level made, Curie-Weiss behavior is observed; Theta(CW) changes from -20 K for 0.5% Fe-doped Cr2B to positive values of about 50 K by 5% Fe doping. The ferromagnetic T-C is 8 K for 2.5% Fe doping and increases linearly to 46 K by 5% doping; we infer that a quantum phase transition occurs near the 2.0% Fe level. Magnetic fluctuations at the intermediate doping levels are reflected in the linear resistance and an anomalous heat capacity at low temperatures. Imaging and chemical analysis down to the atomic scale show that the Fe dopant is randomly distributed.

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 Dates: 2014-06-26
 Publication Status: Published in print
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 89 (22) Sequence Number: 224417 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008