期刊
PHYSICAL REVIEW B
卷 88, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.094405
关键词
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资金
- AFOSR-MURI [FA9550-09-1-0603]
- U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering
- Ames Laboratory, U.S. Department of Energy [DE-AC02-07CH11358]
We report the synthesis of hexagonal LaVxCr1-xGe3 (x = 0-0.21, 1.00) single crystals and present a systematic study of this series by measurements of temperature-and field-dependent magnetic susceptibility, magnetization, resistivity, and specific heat. Ferromagnetism has been observed for x = 0-0.21. The Curie temperature declines monotonically as the V concentration increases. Single-crystalline samples could only be grown for x values up to 0.21 for which the transition temperature was suppressed down to 36 K. Although we could not fully suppress T-C via V substitution, for x = 0.16, we performed magnetization measurements under pressure. The ferromagnetic state is suppressed under pressure at an initial rate of dT(C)/dp similar or equal to -11.7 K/GPa and vanishes by 3.3 GPa. The increase of the Rhodes-Wohlfarth ratio suggests that the ferromagnetism in this system evolves toward itinerant as the V concentration increases.
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