Molten-salt synthesis of rare-earth nickelate electronic transition semiconductors at medium high metastability

Li, Ziang; Yan, Fengbo; Li, Xiaoyü; Cui, Yuchen; Wang, Vei; Wang, Jiaou; Liu, Chen; Jiang, Yong; Chen, Nuofu; Chen, Jikun

doi:10.1016/j.scriptamat.2021.114271

Cited by 15 publications

(10 citation statements)

References 30 publications

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“…Nevertheless, the observation in O-K edge yet reflects that enlarging the rare-earth radius and indicates the strengthening of the Ni 3+ configuration compared to the Ni 2+ . 1,9,11,17 In Figure 5, the R-T tendencies are further demonstrated for as-sintered pellets of La x Pr 1-x NiO 3 (Figure 5A), La x Nd 1-x NiO 3 (Figure 5B), and Ce x Nd 1-x NiO 3 (Figure 5C) at different La or Ce substitution levels. It can be seen that the La substitution reduces the T MIT for both PrNiO 3 and NdNiO 3 , but meanwhile reduces the transition abruption in their R-T tendency across T MIT , as shown in Figure 5A,B.…”

Section: Resultsmentioning

confidence: 91%

“…Comparing the Ni: L 3 ‐edge NEXAFS spectrum, the expected reducing tendency in peak A is not clearly observed when increasing the average radius of Re , 2,11 and this observation is in consistency to the previous reports that the La‐M edge overlaps with Ni‐L 3 . Nevertheless, the observation in O‐K edge yet reflects that enlarging the rare‐earth radius and indicates the strengthening of the Ni 3+ configuration compared to the Ni 2+ 1,9,11,17 …”

Section: Resultsmentioning

confidence: 95%

“…In general, a reducing tendency is observed for T MIT when decreasing the average rare-earth ionic radius within ReNiO 3 or Re x 'Re 1-x NiO 3 (r Re ), and this is in agreement with the previous reports and also our expectation. 14,17,23 Nevertheless, it is worth noticing that the abrupt variation in the material resistance across T MIT (e.g., as evaluated by R Insul. /R Met. )…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the Re NiO 3 exhibits a higher material stability in oxidizing atmosphere or even in sea water, compared to the more commonly investigated VO 2 (or doped VO 2 ) 5,16 . The abrupt variation in the material resistivity as well as the optical properties across the T MIT of Re NiO 3 enables emerging correlated applications, such as critical temperature resistance thermistors, 17,18 logical devices, 19,20 thermochromic, and thermal camouflage 21 …”

Section: Introductionmentioning

confidence: 99%

“…14,15 Furthermore, the ReNiO 3 exhibits a higher material stability in oxidizing atmosphere or even in sea water, compared to the more commonly investigated VO 2 (or doped VO 2 ). 5,16 The abrupt variation in the material resistivity as well as the optical properties across the T MIT of ReNiO 3 enables emerging correlated applications, such as critical temperature resistance thermistors, 17,18 logical devices, 19,20 thermochromic, and thermal camouflage. 21 Up to date, the lowest T MIT as achievable in single rareearth composition ReNiO 3 is achieved in PrNiO 3 at ∼130 K. 6,22,23 The remaining two rare-earths that have larger ionic radii compared to Pr are La and Ce.…”

Section: Introductionmentioning

confidence: 99%

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Extending the metal to insulator transitions of rare‐earth nickelates towards low temperature ranges

Zhong

Zheng

et al. 2023

J Am Ceram Soc.

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Although the d‐band correlated rare‐earth nickelates (ReNiO3) exhibit broadly adjustable metal to insulator transitions (MIT) that enables emerging correlated electronic applications, it is yet difficult to regulate their associated critical temperature (TMIT) below 100 K. Herein, we extend the lower limit in TMIT of ReNiO3 down to 83 K while maintaining an abrupt switch in resistivity via partial La‐substitution of PrNiO3. The near edge X‐ray fine structure analysis and density function theory calculations indicate the strengthening in the metallic orbital configuration and reduction in the ground state band gap via La‐substitution of Re in NdNiO3 and PrNiO3. In contrast, analogous Ce substitution cannot reduce the TMIT of ReNiO3 owing to its valance variability toward +4, while La partial substitution of ReNiO3 with middle or heavy rare‐earth (e.g., Sm) easily disturb the co‐occupation of the Re‐site by the two rare‐earths as one dispersive phase.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 95%