釹於1885年由奧地利化學家卡爾·奧爾·馮·韋爾斯巴赫發現。釹並不以純金屬態存在自然界中,而是與其他稀土金屬一同出現在獨居石和package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found等礦物中。雖然釹被歸類為稀土元素,但它在地殼中相當普遍,並不比鈷、鎳或銅稀有。釹是地殼中豐度第二高的鑭系及稀土元素,僅次於鈰。如同大多數稀土金屬,世界上大部分的商業用釹都是在中國開採的。
釹化合物在1927年首次商業用作玻璃染料,現在仍然是玻璃中流行的添加劑。釹化合物的顏色主要來自其中的Nd3+離子,通常為紅紫色,但會隨着光照的類型而變化。一些摻雜釹離子的玻璃被用作發射波長在1047到1062奈米之間的紅外線激光器材料,應用於慣性局限融合等需要極高功率雷射的技術。釹還作為其他各種package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found晶體的摻雜劑,例如摻釹的釔鋁石榴石(Nd:YAG)被廣泛用作醫療、牙科和工業等領域的雷射器材料(摻釹釔鋁石榴石激光)。
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天然的釹由七種同位素組成,分別是穩定的142Nd、143Nd、145Nd、146Nd、148Nd和長壽命的package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found144Nd(α衰變,半衰期2.29×1015年)、150Nd(雙β衰變,半衰期9.3×1018年)。其中,142Nd最常見,占了天然釹的27.2%。Template:NUBASE2020
釹是由奧地利化學家卡爾·奧爾·馮·韋爾斯巴赫於1885年在維也納發現的。[14][15]他在硝酸溶液中對Didymium的硝酸鹽進行分步結晶,從Didymium中分離出了釹和鐠。韋爾斯巴赫通過光譜學確認了釹的存在,但是得到的樣本純度低。Didymium是由package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found在1841年發現的。純的釹金屬直到1925年才被分離出來。neodymium這個名稱由希臘文字neos(νέος,意為新)和didymos(διδύμος,意為雙胞胎)組成。[7][16][17][18][19][20]
釹在自然界中很少以游離元素的形式被發現,而是存在於諸如獨居石和package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found等稀土礦物中,這些礦石中含有所有的稀土金屬。釹在這些礦物中很少占主導地位,鈰通常是這些礦物中最豐富的稀土元素,不過也有少數例外,如釹獨居石(monazite-(Nd))和羥碳釹石(kozoite-(Nd))等。[23]
在氟碳鈰礦和獨居石等富含輕稀土元素的礦物之商業礦床中,釹通常占稀土總含量的10-18%。[7]由於釹(III)化合物的顏色是三價稀土元素化合物中最醒目的,因此當礦物中不存在其他與之競爭的發色團時,礦石中釹的粉紅色有時會主導該稀土礦物的呈色,代表性的例子包括玻利維亞拉拉瓜錫礦床的獨居石晶體、加拿大魁北克省package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found的package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found以及美國package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found的package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found等。與摻有釹離子的玻璃一樣,這些含釹礦物在不同的光照條件下也會改變顏色。釹的可見光吸收光譜與水銀燈的發射光譜相互作用,未經過濾的短波紫外線使含釹礦物反射出獨特的綠色,此現象可以在含有獨居石沙或含氟碳鈰礦的礦石中觀察到。[31]
某些摻有少量釹離子的透明材料可用於紅外線(波長1054~1064nm)激光器中的package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found,例如摻釹釔鋁石榴石(Nd:YAG)、摻釹氟化釔鋰(Nd:YLF)、package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found(Nd:YVO4)和釹玻璃等。摻釹晶體(通常為Nd:YVO4)能夠產生高功率的紅外線激光束,在商用半導體泵浦固體激光手持激光器和激光筆中轉換為綠色激光束。
輕鑭系元素對於火山package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found中的嗜甲烷菌(如package.lua第80行Lua錯誤:module 'Module:Ilh/data' not found)至關重要,是其體內甲醇脫氫酶的重要輔助因子。由於輕鑭系元素間彼此化學性質的高度相似性,菌體內的鑭、鈰、鐠和釹可以相互取代而不會對菌體產生任何不良影響。若以釤、銪或釓等質量稍重的鑭系元素取代,除了使它們生長緩慢外亦沒有其他副作用。[57]除了Methylacidiphilum fumariolicum外,目前沒有發現釹在其他生物體中發揮任何生物學作用。[58]
↑Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see package.lua第80行Lua錯誤:module 'Module:Citation/CS1/People' not found and package.lua第80行Lua錯誤:module 'Module:Citation/CS1/People' not found
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