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In Situ High-Pressure Correlated Transportation of Heavy Rare-Earth Perovskite Nickelates as Batch Synthesized within Eutectic Molten Salts at MPa-pO2
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2024-07-23 , DOI: 10.1021/acs.jpclett.4c01496 Yuchen Cui 1 , Jingxin Gao 1 , Hongliang Dong 2, 3, 4 , Ziang Li 1 , Ziyou Zhang 2 , Vei Wang 5 , Kaiqi Nie 6 , Zhidan Zeng 2 , Yong Jiang 1 , Nuofu Chen 7 , Ho-Kwang Mao 2, 3 , Jikun Chen 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2024-07-23 , DOI: 10.1021/acs.jpclett.4c01496 Yuchen Cui 1 , Jingxin Gao 1 , Hongliang Dong 2, 3, 4 , Ziang Li 1 , Ziyou Zhang 2 , Vei Wang 5 , Kaiqi Nie 6 , Zhidan Zeng 2 , Yong Jiang 1 , Nuofu Chen 7 , Ho-Kwang Mao 2, 3 , Jikun Chen 1
Affiliation
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The multiple magneto-/electrical quantum transitions discovered with d-band correlated metastable perovskite oxides, such as rare-earth nickelate (ReNiO3), enable applications in artificial intelligence and multifunctional sensors. Nevertheless, to date such investigation merely focuses on ReNiO3 with light or middle rare-earth composition, while the analogous explorations toward heavy rare-earth (ReHNiO3, ReH after Gd) are impeded by their ineffective material synthesis relying on GPa pressure. Herein, for the first time we synthesized the powder of ReHNiO3 in grams/batch with ∼1000 times lower pressure and ∼300 °C lower temperature in comparison to the previous ∼101 milligram/batch results, assisted by their eutectic precipitation and heterogeneous growth within alkali-metal halide molten salt at MPa oxygen pressures. Further in situ characterizations under high pressures within a diamond anvil cell reveal a distinguishing pressure predominated bad metal transport within the nonequilibrium state of ReHNiO3 showing high-pressure sensitivity up to 10 GPa, and the temperature dependences in electrical transportations are effectively frozen.
中文翻译：
共晶熔盐中 MPa-pO2 下批量合成的重稀土钙钛矿镍酸盐的原位高压关联传输
使用d波段相关亚稳态钙钛矿氧化物（例如稀土镍酸盐 ( Re NiO 3 )）发现的多个磁/电量子跃迁可在人工智能和多功能传感器中应用。然而，迄今为止，此类研究仅集中于轻或中稀土成分的Re NiO 3 ，而对重稀土（ Re H NiO 3 ，Gd之后的Re H ）的类似探索则因依赖于其无效的材料合成而受到阻碍。 GPa 压力。在此，我们首次合成了克/批次的Re H NiO 3粉末，与之前的约 10 1毫克/批次结果相比，压力降低了约 1000 倍，温度降低了约 300 °C，这得益于它们的共晶沉淀。以及在 MPa 氧气压力下碱金属卤化物熔盐内的异质生长。金刚石砧室高压下的进一步原位表征揭示了Re H NiO 3非平衡状态下的明显压力主导的不良金属传输，显示出高达 10 GPa 的高压敏感性，并且电传输中的温度依赖性被有效地冻结。
更新日期：2024-07-23
中文翻译：
共晶熔盐中 MPa-pO2 下批量合成的重稀土钙钛矿镍酸盐的原位高压关联传输
使用d波段相关亚稳态钙钛矿氧化物（例如稀土镍酸盐 ( Re NiO 3 )）发现的多个磁/电量子跃迁可在人工智能和多功能传感器中应用。然而，迄今为止，此类研究仅集中于轻或中稀土成分的Re NiO 3 ，而对重稀土（ Re H NiO 3 ，Gd之后的Re H ）的类似探索则因依赖于其无效的材料合成而受到阻碍。 GPa 压力。在此，我们首次合成了克/批次的Re H NiO 3粉末，与之前的约 10 1毫克/批次结果相比，压力降低了约 1000 倍，温度降低了约 300 °C，这得益于它们的共晶沉淀。以及在 MPa 氧气压力下碱金属卤化物熔盐内的异质生长。金刚石砧室高压下的进一步原位表征揭示了Re H NiO 3非平衡状态下的明显压力主导的不良金属传输，显示出高达 10 GPa 的高压敏感性，并且电传输中的温度依赖性被有效地冻结。
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