| Download | - View accepted manuscript: Neutron Diffraction Study of the Magnetic and Structural Phase Transitions in BaFe2As2 (PDF, 597 KiB)
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| Author | Search for: Wilson, Stephen D.; Search for: Yamani, Z.1; Search for: Rotundu, C. R.; Search for: Freelon, B.; Search for: Bourret-Courchesne, E.; Search for: Birgeneau, R. J. |
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| Affiliation | - National Research Council of Canada. NRC Canadian Neutron Beam Centre
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| Format | Text, Article |
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| Abstract | We present the results of an investigation of both the magnetic and structural phase transitions in a high quality single crystalline sample of the undoped iron pnictide compound BaFe2As2. Both phase transitions are characterized via neutron diffraction measurements which reveal simultaneous, continuous magnetic and structural orderings with no evidence of hysteresis, consistent with a single second-order phase transition. The onset of long-range antiferromagnetic order can be described by a simple power-law dependenceT21−T TN 2 with=0.1030.018; a value near the=0.125 expected for a two-dimensional Ising system. Biquadratic coupling between the structural and magnetic order parameters is also inferred along with evidence of threedimensional critical scattering in this system. |
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| Publication date | 2009-05-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 14791085 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7313522f-14dd-4239-854d-ae2facf93b9c |
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| Record created | 2011-02-15 |
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| Record modified | 2020-04-16 |
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