Masashi Tanaka*, Masaya Fujioka, Duncan H. Gregory and Kei Inumaru,
{"title":"岩盐型富氮缺锆氮化物的体合成与超导性","authors":"Masashi Tanaka*, Masaya Fujioka, Duncan H. Gregory and Kei Inumaru, ","doi":"10.1021/acs.chemmater.5c0017510.1021/acs.chemmater.5c00175","DOIUrl":null,"url":null,"abstract":"<p >Zirconium nitrides were derived from crystalline powders of layer-structured ZrNCl via ammonothermal dechlorination at various temperatures under flowing ammonia gas. Regardless of which polymorph of ZrNCl was employed as a starting material, the products of the ammonothermal dechlorination reactions were zirconium nitride powders with the rock salt structure. The size of the cubic lattice parameter was found to be dependent on the ammonia flow rate. Each of the synthesized zirconium nitrides is nonstoichiometric and nitrogen-rich (zirconium-deficient), Zr<sub>1–<i>x</i></sub>N, and some exhibit superconductivity at subambient temperature. The superconducting transition temperature (<i>T</i><sub>c</sub>) of each of the nitrides scales linearly with the corresponding cubic unit cell volume (lattice parameter, <i>a</i>) and the N/Zr ratio. This paper represents the first report of a superconducting dome in bulk nitrogen-rich zirconium nitrides with a rock-salt-type structure; to date, a unique characteristic among superconducting rock salt phases.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 10","pages":"3747–3756 3747–3756"},"PeriodicalIF":7.2000,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.5c00175","citationCount":"0","resultStr":"{\"title\":\"Bulk Synthesis and Superconductivity of Rock Salt-Type, Nitrogen-Rich, Zirconium-Deficient Nitrides, Zr1–xN\",\"authors\":\"Masashi Tanaka*, Masaya Fujioka, Duncan H. Gregory and Kei Inumaru, \",\"doi\":\"10.1021/acs.chemmater.5c0017510.1021/acs.chemmater.5c00175\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Zirconium nitrides were derived from crystalline powders of layer-structured ZrNCl via ammonothermal dechlorination at various temperatures under flowing ammonia gas. Regardless of which polymorph of ZrNCl was employed as a starting material, the products of the ammonothermal dechlorination reactions were zirconium nitride powders with the rock salt structure. The size of the cubic lattice parameter was found to be dependent on the ammonia flow rate. Each of the synthesized zirconium nitrides is nonstoichiometric and nitrogen-rich (zirconium-deficient), Zr<sub>1–<i>x</i></sub>N, and some exhibit superconductivity at subambient temperature. The superconducting transition temperature (<i>T</i><sub>c</sub>) of each of the nitrides scales linearly with the corresponding cubic unit cell volume (lattice parameter, <i>a</i>) and the N/Zr ratio. This paper represents the first report of a superconducting dome in bulk nitrogen-rich zirconium nitrides with a rock-salt-type structure; to date, a unique characteristic among superconducting rock salt phases.</p>\",\"PeriodicalId\":33,\"journal\":{\"name\":\"Chemistry of Materials\",\"volume\":\"37 10\",\"pages\":\"3747–3756 3747–3756\"},\"PeriodicalIF\":7.2000,\"publicationDate\":\"2025-05-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.5c00175\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemistry of Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.chemmater.5c00175\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry of Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.chemmater.5c00175","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Bulk Synthesis and Superconductivity of Rock Salt-Type, Nitrogen-Rich, Zirconium-Deficient Nitrides, Zr1–xN
Zirconium nitrides were derived from crystalline powders of layer-structured ZrNCl via ammonothermal dechlorination at various temperatures under flowing ammonia gas. Regardless of which polymorph of ZrNCl was employed as a starting material, the products of the ammonothermal dechlorination reactions were zirconium nitride powders with the rock salt structure. The size of the cubic lattice parameter was found to be dependent on the ammonia flow rate. Each of the synthesized zirconium nitrides is nonstoichiometric and nitrogen-rich (zirconium-deficient), Zr1–xN, and some exhibit superconductivity at subambient temperature. The superconducting transition temperature (Tc) of each of the nitrides scales linearly with the corresponding cubic unit cell volume (lattice parameter, a) and the N/Zr ratio. This paper represents the first report of a superconducting dome in bulk nitrogen-rich zirconium nitrides with a rock-salt-type structure; to date, a unique characteristic among superconducting rock salt phases.
期刊介绍：
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.
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