Second order phase transition temperature of single crystals of Gd₅Si_1.3Ge_2.7 and Gd₅Si_1.4Ge_2.6

Journal Article · Fri Jan 30 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4907190· OSTI ID:1227302

Hadimani, R. L.  ^[1]; Melikhov, Y. ^[2]; Schlagel, D. L. ^[3]; Lograsso, T. A. ^[4]; Dennis, K. W. ^[3]; McCallum, R. W. ^[4]; Jiles, D. C. ^[1]

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1. Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)
2. Cardiff Univ., Cardiff (United Kingdom); Polish Academy of Science, Warsaw (Poland)
3. Ames Lab., Ames, IA (United States)
4. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

Gd₅(Si_xGe_1–x)₄ has mixed phases in the composition range 0.32 < x < 0.41, which have not been widely studied. In this paper, we have synthesized and indexed single crystal samples of Gd₅Si_1.3Ge_2.7 and Gd₅Si_1.4Ge_2.6. In this study, we have investigated the first order and second order phase transition temperatures of these samples using magnetic moment vs. temperature and magnetic moment vs. magnetic field at different temperatures. We have used a modified Arrott plot technique that was developed and reported by us previously to determine the “hidden” second order phase transition temperature of the orthorhombic II phase.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-07CH11358
• OSTI ID: 1227302
• Alternate ID(s): OSTI ID: 1421128
• Report Number(s): IS-J-8682; JAPIAU
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
germanium
magnetic phase transitions
single crystals
magnetic fields
phase diagrams