Long-Time Variation of Magnetic Structure in (Pr_xLa_1-x)Co₂Si₂: Coexistence of Slow and Fast Processes in Magnetic Phase Transition

Journal Article · Tue Mar 14 00:00:00 EDT 2017 · Journal of the Physical Society of Japan

DOI:https://doi.org/10.7566/JPSJ.86.044707· OSTI ID:1347344

Motoya, Kiyoichiro ^[1]; Hagihala, Masato ^[1]; Shigeoka, Toru ^[2]; Pajerowski, Daniel ^[3]; Matsuda, Masaaki ^[3]

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1. Tokyo Univ. of Science, Noda (Japan). Faculty of Science and Technology. Dept. of Physics
2. Yamaguchi Univ. (Japan). Graduate School of Science and Engineering
3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division

In this paper, long-time variations of the magnetic structure in PrCo₂Si₂ and (Pr_0.98La_0.02)Co₂Si₂ were studied by magnetization and time-resolved neutron scattering measurements. The amplitudes of magnetic Bragg peaks showed marked time variations after cooling or heating across the magnetic transition temperature T₁ between two different antiferromagnetic phases. However, the amplitude of the time variation decreased rapidly with increasing distance from T₁. Finally, we analyzed the results on the basis of a phase transition model that includes the coexistence of fast and slow processes.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Tokyo Univ. of Science, Noda (Japan)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); Ministry of Education, Culture, Sports, Science and Technology (Japan)
• Contributing Organization: Yamaguchi Univ. (Japan)
• Grant/Contract Number: AC05-00OR22725; 24540351
• OSTI ID: 1347344
• Journal Information: Journal of the Physical Society of Japan, Vol. 86, Issue 4; ISSN 0031-9015
• Publisher: Physical Society of Japan
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY