| dbo:abstract
|
- كبريتيد تانتالوم رباعي (بالإنجليزية: Tantalum(IV) sulfide ) مركب كيميائي له الصيغة TaS2 ، ويكون على شكل بلورات سوداء . (ar)
- Tantal(IV)-sulfid ist eine anorganische chemische Verbindung des Tantals aus der Gruppe der Sulfide, also der Übergangsmetalldichalkogenide. Neben diesem sind noch mindestens vier weitere Tantalsulfide (Ta6S, Ta2S, Ta1+xS2 und TaS3) bekannt. Viele davon haben Homogenitätsgebiete oder unterscheiden sich voneinander als Stapelvarianten eines Grundgittertyps. (de)
- Tantalum(IV) sulfide is an inorganic compound with the formula TaS2. It is a layered compound with three-coordinate sulfide centres and trigonal prismatic or octahedral metal centres. It is structurally similar to molybdenum disulfide MoS2, and numerous other transition metal dichalcogenide materials. The 1T-TaS2 polytype exhibits some unusual properties. In common with many other transition metal dichalcogenide (TMD) compounds, which are metallic at high temperatures, it exhibits a series of charge-density-wave (CDW) phase transitions from 550 K to 50 K. It is unusual amongst them in showing a low-temperature insulating state below 200 K, which is believed to arise from electron correlations, similar to many oxides. The insulating state is commonly attributed to a Mott state. It is also superconducting under pressure or upon doping, with a familiar dome-like phase diagram as a function of dopant, or substituted isovalent element concentration. Metastability. 1T-TaS2 is unique, not only amongst TMDs but also amongst 'quantum materials' in general, in showing a metastable metallic state at low temperatures. Switching from the insulating to the metallic state can be achieved either optically or by the application of electrical pulses. The metallic state is persistent at low temperatures (below ~20K), but its lifetime can be tuned by changing the temperature. The metastable state lifetime can also be tuned by strain. The electrically-induced switching between states is of current interest, because it can be used for ultrafast energy-efficient memory devices. Because of the frustrated triangular arrangement of localized electrons, the material is suspected of supporting some form of quantum spin liquid state. It has been the subject of numerous studies as a host for intercalation of electron donors. (en)
- Дисульфид тантала — неорганическое соединение, соль металла тантала и сероводородной кислоты с формулой TaS2, серые или чёрные кристаллы, не растворимые в воде. (ru)
- 二硫化钽是一种无机化合物，化学式TaS2。 它是具有三配位硫中心和三角棱柱金属中心的层状化合物。它在结构上与更著名的材料二硫化钼 MoS2相似。 TaS2 是一种半导体，有 d1 电子构型。 (zh)
|
| dbo:alternativeName
| |
| dbo:thumbnail
| |
| dbo:wikiPageID
| |
| dbo:wikiPageLength
|
- 14359 (xsd:nonNegativeInteger)
|
| dbo:wikiPageRevisionID
| |
| dbo:wikiPageWikiLink
| |
| dbp:imagecaption
|
- sample (en)
- Crystal structure showing two stacked S-Ta-S sheets (en)
|
| dbp:imagefile
|
- Molybdenite-3D-balls.png (en)
|
| dbp:imagesize
| |
| dbp:name
| |
| dbp:othernames
| |
| dbp:verifiedfields
| |
| dbp:verifiedrevid
| |
| dbp:watchedfields
| |
| dbp:wikiPageUsesTemplate
| |
| dcterms:subject
| |
| gold:hypernym
| |
| rdf:type
| |
| rdfs:comment
|
- كبريتيد تانتالوم رباعي (بالإنجليزية: Tantalum(IV) sulfide ) مركب كيميائي له الصيغة TaS2 ، ويكون على شكل بلورات سوداء . (ar)
- Tantal(IV)-sulfid ist eine anorganische chemische Verbindung des Tantals aus der Gruppe der Sulfide, also der Übergangsmetalldichalkogenide. Neben diesem sind noch mindestens vier weitere Tantalsulfide (Ta6S, Ta2S, Ta1+xS2 und TaS3) bekannt. Viele davon haben Homogenitätsgebiete oder unterscheiden sich voneinander als Stapelvarianten eines Grundgittertyps. (de)
- Дисульфид тантала — неорганическое соединение, соль металла тантала и сероводородной кислоты с формулой TaS2, серые или чёрные кристаллы, не растворимые в воде. (ru)
- 二硫化钽是一种无机化合物，化学式TaS2。 它是具有三配位硫中心和三角棱柱金属中心的层状化合物。它在结构上与更著名的材料二硫化钼 MoS2相似。 TaS2 是一种半导体，有 d1 电子构型。 (zh)
- Tantalum(IV) sulfide is an inorganic compound with the formula TaS2. It is a layered compound with three-coordinate sulfide centres and trigonal prismatic or octahedral metal centres. It is structurally similar to molybdenum disulfide MoS2, and numerous other transition metal dichalcogenide materials. The 1T-TaS2 polytype exhibits some unusual properties. In common with many other transition metal dichalcogenide (TMD) compounds, which are metallic at high temperatures, it exhibits a series of charge-density-wave (CDW) phase transitions from 550 K to 50 K. It is unusual amongst them in showing a low-temperature insulating state below 200 K, which is believed to arise from electron correlations, similar to many oxides. The insulating state is commonly attributed to a Mott state. It is also s (en)
|
| rdfs:label
|
- كبريتيد تانتالوم رباعي (ar)
- Tantal(IV)-sulfid (de)
- Дисульфид тантала (ru)
- Tantalum(IV) sulfide (en)
- 二硫化钽 (zh)
|
| owl:sameAs
| |
| prov:wasDerivedFrom
| |
| foaf:depiction
| |
| foaf:isPrimaryTopicOf
| |
| foaf:name
|
- Tantalum(IV) sulfide (en)
|
| is dbo:wikiPageRedirects
of | |
| is dbo:wikiPageWikiLink
of | |
| is foaf:primaryTopic
of | |
