Long-time variation of magnetic structure in (PrxLa1-x)Co2Si2: Coexistence of slow and fast processes in magnetic phase transition

Kiyoichiro Motoya; Masato Hagihala; Toru Shigeoka; Daniel Pajerowski; Masaaki Matsuda

doi:10.7566/JPSJ.86.044707

Long-time variation of magnetic structure in (Pr_xLa_1-x)Co₂Si₂: Coexistence of slow and fast processes in magnetic phase transition

Kiyoichiro Motoya, Masato Hagihala, Toru Shigeoka, Daniel Pajerowski, Masaaki Matsuda

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

Abstract

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. We analyzed the results on the basis of a phase transition model that includes the coexistence of fast and slow processes.

Original language	English
Article number	044707
Journal	Journal of the Physical Society of Japan
Volume	86
Issue number	4
DOIs	https://doi.org/10.7566/JPSJ.86.044707
State	Published - Apr 15 2017

Funding

We thank Saori Takagi and Masahiro Asano for their assistance in sample growth and magnetization measurements. The neutron scattering experiment at Oak Ridge National Laboratory was supported by the US-Japan Cooperative Program on Neutron Scattering. Research conducted at ORNL's High Flux Isotope Reactor was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. This work was partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (No. 24540351).

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abstract = "Long-time variations of the magnetic structure in PrCo2Si2 and (Pr0.98La0.02)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. We analyzed the results on the basis of a phase transition model that includes the coexistence of fast and slow processes.",

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Long-time variation of magnetic structure in (Pr_xLa_1-x)Co₂Si₂: Coexistence of slow and fast processes in magnetic phase transition

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