프닉타이드 산화물

3. 초전도성

닉타이드 산화물의 초전도는 철과 5족 원소 층에서 나타나는 것으로 보인다. 철-비소 화합물 중에는 산소나 닉토겐(5족 원소)을 포함하지 않는 것도 있다.

3. 1. 비주류 초전도체

자기장을 45 테슬라까지 올린 실험^[27][28]들에 따르면 LaFeAsO_0.89F_0.11의 상계 임계 자기장은 약 64 T 근처인 것으로 생각된다.

닉타이드 산화물은 잘 부스러지기 때문에, 초전도 전선을 만들 경우에는 철제 튜브에 파우더 형태로 넣는 공정을 거쳐서 만들어진다.^[29]

닉타이드 산화물에서 초전도가 보이는 원인은 아직 명확하게 밝혀지지 않았다.

4. 응용

프닉타이드 산화물은 취성이 있기 때문에, 초전도 전선을 형성할 때 분말-튜브 공정(철 튜브 사용)을 사용한다.^[17]

참조

_[1] 논문 The rate earth transition metal phosphide oxides LnFePO, LnRuPO and LnCoPO with ZrCuSiAs type structure
_[2] 논문 Iron-Based Layered Superconductor: LaOFeP
_[3] 논문 Superconductivity at 43 K in an iron-based layered compound LaO_1−xF_xFeAs
_[4] 논문 New family of quaternary iron-based compounds superconducts at tens of kelvin
_[5] 특허 Magnetic semiconductor material http://www.freepaten[...]
_[6] 논문 Chemistry of layered d-metal pnictide oxides and their potential as candidates for new superconductors
_[7] 논문 Synthesis, crystal structure and superconductivity of LaNiPO
_[8] 논문 Samarium based SmFeAsO_1−xF_x
[9] 논문 To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report
_[10] 논문 Potassium fluoride doped LaOFeAs multi-band superconductor: Evidence of extremely high upper critical field
_[11] 논문 Superconductivity at 43 K at ambient pressure in the iron-based layered compound La_1‑xY_xFeAsO_y
[12] 논문 Superconductivity at 52 K in iron based F doped layered quaternary compound Pr[O_1–xF_x]FeAs
_[13] 논문 Superconductivity at 53.5 K in GdFeAsO_1−δ
[14] 논문 Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO_1−δ (Re = rare-earth metal) without fluorine doping
_[15] 웹사이트 High-temp superconductors pave way for 'supermagnets' http://www.planetana[...] planetanalog 2008-05-29
_[16] 논문 Two-band superconductivity in LaFeAsO_0.89F_0.11 at very high magnetic fields
_[17] 논문 Preparation of LaFeAsO_0.9F_0.1 wires by the powder-in-tube method
_[18] 논문 The rate earth transition metal phosphide oxides LnFePO, LnRuPO and LnCoPO with ZrCuSiAs type structure https://archive.org/[...]
_[19] 논문 Iron-Based Layered Superconductor: LaOFeP
_[20] 논문 Superconductivity at 43 K in an iron-based layered compound LaO_1-xF_xFeAs
_[21] 논문 New family of quaternary iron-based compounds superconducts at tens of kelvin http://ptonline.aip.[...] 2008-12-17
_[22] 특허 MAGNETIC SEMICONDUCTOR MATERIAL - Patent EP1868215 http://www.freepaten[...]
_[23] 문서 "Chemistry of layered d-metal pnictide oxides and their potential as candidates for new superconductors - topical review" http://dx.doi.org/10[...]
_[24] 논문 Synthesis, crystal structure and superconductivity of LaNiPO
_[25] 웹인용 Samarium based SmFeAsO_1−xF_x http://arxiv.org/abs[...]
_[26] 문서 http://dx.doi.org/10[...]
_[27] 웹인용 High-temp superconductors pave way for 'supermagnets' http://www.planetana[...] planetanalog 2008-05-29
_[28] 논문 Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields http://www.nature.co[...]
_[29] 웹사이트 LaFeAsOF wires http://www.iop.org/E[...]