Ultrawide Temperature Range Super-Invar Behavior of 
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Cao, Yili; Lin, Kun; Khmelevskyi, Sergii; Avdeev, Maxim; Taddei, Keith M.; Zhang, Qiang; Huang, Q.; Li, Qiang; Kato, Kenichi; Tang, Chiu C.; Gibbs, Alexandra S.; Wang, Chin-Wei; Deng, Jinxia; Zhang, Hongjie; Xing, Xianran

doi:10.1103/physrevlett.127.055501

Cited by 37 publications

(24 citation statements)

References 33 publications

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“…For the Co-sublattice, the increasing population of nonbonding states can be compensated by the depopulation of other nonbonding states in the majority band with increasing spin order, and the MVE of Co-sublattice is thus much smaller (Figure b). The magnitude of MVE is in proportion to that of total magnetic moments of Fe-sublattices (Figure c,d) . By introducing a little Co content into the Fe-sublattice, the internal molecular field acting on magnetic ordering of Fe-sublattice increases markedly, which is able to retard thermal-induced magnetic disorder and extend the abnormal thermal expansion over a broader temperature range for R 2 (Fe,Co) 17 compounds.…”

Section: Magnetic Ordering and Ntementioning

confidence: 97%

“…The magnitude of MVE is in proportion to that of total magnetic moments of Fe-sublattices (Figure 42c,d). 191 By introducing a little Co content into the Fe-sublattice, the internal molecular field acting on magnetic ordering of Fe-sublattice increases markedly, which is able to retard thermal-induced magnetic disorder and extend the abnormal thermal expansion over a broader temperature range for R 2 (Fe,Co) 17 compounds. For Ho 2 Fe 17 , the change of magnetic moment of the Fe-sublattice with temperature (d|ΣM Fe |/dT) transforms rapidly and decreases more steeply near the T C , resulting in a quick reduction of MVE (dV M (T)/dT) upon heating and a correspondingly large change in the unit cell volume.…”

Section: Chemical Modifications On Magnetic Sublatticesmentioning

confidence: 99%

“…(c) Magnetic moments of Fe/Co atoms ( M Fe/Co ) at the 6g site and the unit cell volume as a function of the applied magnetic field for the Ho 2 Fe 16 Co compound at 5 K; (d) positive correlation between the magnetic moments of Fe-sublattice (|Σ M Fe |) and the contribution of magnetic ordering to the unit cell volume ( V M ( T )). The inset shows the |Σ M Fe | as a function of Co content . Reproduced with permission from ref .…”

Section: Magnetic Ordering and Ntementioning

confidence: 99%

Section: Magnetic Ordering and Ntementioning

confidence: 99%

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Chemical Diversity for Tailoring Negative Thermal Expansion

Lin

Liu

et al. 2022

Chem. Rev.

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Negative thermal expansion (NTE), referring to the lattice contraction upon heating, has been an attractive topic of solid-state chemistry and functional materials. The response of a lattice to the temperature field is deeply rooted in its structural features and is inseparable from the physical properties. For the past 30 years, great efforts have been made to search for NTE compounds and control NTE performance. The demands of different applications give rise to the prominent development of new NTE systems covering multifarious chemical substances and many preparation routes. Even so, the intelligent design of NTE structures and efficient tailoring for lattice thermal expansion are still challenging. However, the diverse chemical routes to synthesize target compounds with featured structures provide a large number of strategies to achieve the desirable NTE behaviors with related properties. The chemical diversity is reflected in the wide regulating scale, flexible ways of introduction, and abundant structure–function insights. It inspires the rapid growth of new functional NTE compounds and understanding of the physical origins. In this review, we provide a systematic overview of the recent progress of chemical diversity in the tailoring of NTE. The efficient control of lattice and deep structural deciphering are carefully discussed. This comprehensive summary and perspective for chemical diversity are helpful to promote the creation of functional zero-thermal-expansion (ZTE) compounds and the practical utilization of NTE.

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Section: Magnetic Ordering and Ntementioning

confidence: 97%

Section: Chemical Modifications On Magnetic Sublatticesmentioning

confidence: 99%

Section: Magnetic Ordering and Ntementioning

confidence: 99%

Section: Magnetic Ordering and Ntementioning

confidence: 99%

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Chemical Diversity for Tailoring Negative Thermal Expansion

Lin

Liu

et al. 2022

Chem. Rev.

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“…The ZTE of ZTFC was also confirmed by neutron diffraction (α a = 0.19 × 10 −6 K −1 , 5-360 K, see the inset of Figure 1a). Notably, the magnitude of CTE for ZTFC is only 1% of common metals like Fe (α l = 12.2 × 10 −6 K −1 ), Al (α l = 22.9 × 10 −6 K −1 ), and Cu (α l = 16.3 × 10 −6 K −1 ), [42,43] and is one order of magnitude smaller than Invar (α l = 1.8 × 10 −6 K −1 ). Compared with typical ZTE alloys such as Invar and stainless Invar, the ultralow CTE and the wide ZTE temperature window of ZTFC show a robust ZTE performance (see Figure 1b).…”

Section: Resultsmentioning

confidence: 99%

A Seawater‐Corrosion‐Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)₂ Alloy

Lin

Yan

et al. 2022

Advanced Materials

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Zero thermal expansion (ZTE) alloys as dimensionally stable materials are usually challenged by harsh environmental erosion, since ZTE and corrosion resistance are generally mutually exclusive. Here, a high‐performance alloy, Zr0.8Ta0.2Fe1.7Co0.3, is reported, that shows isotropic ZTE behavior (αl = 0.21(2) × 10−6 K−1) in a wide temperature range of 5–360 K, high corrosion resistance in a seawater‐like solution compared with classic Invar and stainless Invar, and excellent cyclic thermal and structural stabilities. Such stabilities are attributed to the cubic symmetry, the controllable magnetic order, and the spontaneously formed passive film with Ta and Zr chemical modifications. The results are evidenced by X‐ray/neutron diffraction, microscopy, spectroscopy, and electrochemistry investigations. Such multiple stabilities have the potential to broaden the robust applications of ZTE alloys, especially in marine services.

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Invar Effect in the Wide and Higher Temperature Range by Coherent Coupling in Fe‐Based Alloy

Cui,

Sun,

Shi

et al. 2023

Adv Funct Materials

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Invar alloys with zero thermal expansion (ZTE), isotropy, high operation temperature, and wide temperature range are of great significance in fields such as aerospace and modern industry. However, it is difficult to simultaneously meet the above characteristics in one material. The traditional methods like element or vacancies doping would increase the operation temperature but at the expense of ZTE behavior. Here, by the coherent coupling between two cubic phases, the isotropic ZTE metallic material with the higher cut‐off temperature (560 K) and a wide operation temperature range (ΔT = 200 K) is obtained in Fe2.75Co0.25PtB0.25. The operation temperature range is much higher than that of commercial Fe0.65Ni0.35 Invar alloy and meets the applications at elevated temperatures. High‐angle annular dark field images and synchrotron X‐ray diffraction prove that by the coherent interfacial coupling between the A1 and its coherent L12 nanodomains, the original negative thermal expansion or positive thermal expansion performances for them can be changed into the same ZTE performances. This thermal expansion regulation strategy realized by coherent coupling will lead to an innovative and significant revolution for ZTE design and promote its development and application.

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Ultrawide Temperature Range Super-Invar Behavior of R2(Fe,Co)17 Materials (
Yili Cao
¹
,
Kun Lin
²
,
Sergii Khmelevskyi
³

et al.

Cited by 37 publications

References 33 publications

Chemical Diversity for Tailoring Negative Thermal Expansion

Chemical Diversity for Tailoring Negative Thermal Expansion

A Seawater‐Corrosion‐Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)₂ Alloy

Invar Effect in the Wide and Higher Temperature Range by Coherent Coupling in Fe‐Based Alloy

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Ultrawide Temperature Range Super-Invar Behavior of R2(Fe,Co)17 Materials ( Yili Cao1, Kun Lin2, Sergii Khmelevskyi3 et al.

Cited by 37 publications

References 33 publications

Chemical Diversity for Tailoring Negative Thermal Expansion

Chemical Diversity for Tailoring Negative Thermal Expansion

A Seawater‐Corrosion‐Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)2 Alloy

Invar Effect in the Wide and Higher Temperature Range by Coherent Coupling in Fe‐Based Alloy

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Product

Resources

About

Ultrawide Temperature Range Super-Invar Behavior of R2(Fe,Co)17 Materials (
Yili Cao
¹
,
Kun Lin
²
,
Sergii Khmelevskyi
³

et al.

A Seawater‐Corrosion‐Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)₂ Alloy