{"title":"Magnetic Ordered State and Enhanced Conductivity in La3-xTbxNi2O7−δ with High Oxygen Pressure Annealing","authors":"Keke Jiao, Rui Niu, Weili Zhen, Huixin Xu, Wanli Zhu, Li Zheng, Yongliang Qin, Changjin Zhang","doi":"10.1007/s10948-025-06989-6","DOIUrl":null,"url":null,"abstract":"<div><p>A series of La<sub>3-<i>x</i></sub>Tb<sub><i>x</i></sub>Ni<sub>2</sub>O<sub>7-δ</sub> samples have been synthesized for the first time, and the effects of Tb doping in La<sub>3</sub>Ni<sub>2</sub>O<sub>7-δ</sub> are investigated through a comprehensive investigation on the structural parameters, electrical transport, and magnetic properties of the La<sub>3-<i>x</i></sub>Tb<sub><i>x</i></sub>Ni<sub>2</sub>O<sub>7-δ</sub> samples. Novel magnetic ordered state has been observed both in the as-prepared La<sub>3-<i>x</i></sub>Tb<sub><i>x</i></sub>Ni<sub>2</sub>O<sub>7-δ</sub> compounds and in the samples after high oxygen pressure annealing. The high oxygen pressure annealing results in substantial enhancement of the oxygen content and the increase of nominal valence state of Ni in the La<sub>3-<i>x</i></sub>Tb<sub><i>x</i></sub>Ni<sub>2</sub>O<sub>7-δ</sub> samples, leading to an enhanced conductivity. The present work could contribute to the exploration of possible ambient pressure superconductivity in doped La<sub>3</sub>Ni<sub>2</sub>O<sub>7-δ</sub> systems.</p></div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"38 3","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10948-025-06989-6.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Superconductivity and Novel Magnetism","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10948-025-06989-6","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
A series of La3-xTbxNi2O7-δ samples have been synthesized for the first time, and the effects of Tb doping in La3Ni2O7-δ are investigated through a comprehensive investigation on the structural parameters, electrical transport, and magnetic properties of the La3-xTbxNi2O7-δ samples. Novel magnetic ordered state has been observed both in the as-prepared La3-xTbxNi2O7-δ compounds and in the samples after high oxygen pressure annealing. The high oxygen pressure annealing results in substantial enhancement of the oxygen content and the increase of nominal valence state of Ni in the La3-xTbxNi2O7-δ samples, leading to an enhanced conductivity. The present work could contribute to the exploration of possible ambient pressure superconductivity in doped La3Ni2O7-δ systems.
期刊介绍：
The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.
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