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Colossal negative thermal expansion induced by magnetic phase competition on frustrated lattices in Laves phase compound (Hf, Ta)Fe-2
Li, B.; Luo, X. H.; Wang, H.; Ren, W. J.; Yano, S.; Wang, C-W.; Gardner, J. S.; Liss, K. -D.; Miao, P.; Lee, S. -H.; Kamiyama, T.; Wu, R. Q.; Kawakita, Y.; Zhang, Z. D.; Li, B (reprint author), Japan Atom Energy Agcy, Japan Proton Accelerator Res Complex, Tokai, Ibaraki 3191195, Japan.
2016-06-06
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume93Issue:22
AbstractCompetition between ferromagnetic and antiferromagnetic phases on frustrated lattices in hexagonal Laves phase compound Hf0.86Ta0.14Fe2 is investigated by using neutron diffraction as a function of temperature and magnetic fields and density-functional-theory calculations. At 325 K, the compound orders into the 120 degrees frustrated antiferromagnetic state with a well-reduced magnetic moment, and an in-plane lattice contraction simultaneously sets in. With further cooling down, however, the accumulated distortion in turn destabilizes this susceptible frustrated structure. The frustration is completely relieved at 255 K when the first-order transition to the ferromagnetic state takes place, where a colossal negative volumetric thermal expansion, -123 x 10(-6)/K, is obtained. Meanwhile, the antiferromagnetic state can be suppressed by few-tesla magnetic fields, which results in a colossal positive magnetostriction. Such delicate competition is attributed to the giant magnetic fluctuation inherent in the frustrated antiferromagnetic state. Therefore, the magnetoelastic instability is approached even under a small perturbation.
description.department[li, b. ; kawakita, y.] japan atom energy agcy, japan proton accelerator res complex, tokai, ibaraki 3191195, japan ; [luo, x. h. ; ren, w. j. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [wang, h. ; wu, r. q.] univ calif irvine, dept phys & astron, irvine, ca 92697 usa ; [yano, s. ; wang, c-w. ; gardner, j. s.] natl synchrotron radiat res ctr, neutron grp, hsinchu 30077, taiwan ; [liss, k. -d.] australian nucl sci & technol org, lucas heights, nsw 2234, australia ; [miao, p. ; lee, s. -h. ; kamiyama, t.] high energy accelerator org, inst mat struct sci, neutron sci lab, 1-1 oho, tsukuba, ibaraki 3050801, japan
Subject AreaPhysics
Funding OrganizationNational Natural Science Foundation of China [51331006, 51531008]; DOE-BES [DE-FG02-05ER46237]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75836
Collection中国科学院金属研究所
Corresponding AuthorLi, B (reprint author), Japan Atom Energy Agcy, Japan Proton Accelerator Res Complex, Tokai, Ibaraki 3191195, Japan.
Recommended Citation
GB/T 7714
Li, B.,Luo, X. H.,Wang, H.,et al. Colossal negative thermal expansion induced by magnetic phase competition on frustrated lattices in Laves phase compound (Hf, Ta)Fe-2[J]. PHYSICAL REVIEW B,2016,93(22).
APA Li, B..,Luo, X. H..,Wang, H..,Ren, W. J..,Yano, S..,...&Li, B .(2016).Colossal negative thermal expansion induced by magnetic phase competition on frustrated lattices in Laves phase compound (Hf, Ta)Fe-2.PHYSICAL REVIEW B,93(22).
MLA Li, B.,et al."Colossal negative thermal expansion induced by magnetic phase competition on frustrated lattices in Laves phase compound (Hf, Ta)Fe-2".PHYSICAL REVIEW B 93.22(2016).
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