利用红外光谱,电子顺磁共振以及电阻率等实验手段,对LaBa2Cu3-xAlxOy(0≤x≤0.7)系列样品进行了研究.结果表明：Al掺杂导致了体系电荷的重新分布.随着Al掺杂量的增加,超导电性被很快地抑制,电阻率逐渐增大.随着Al掺杂量的增加,Cu(1)O(1)(530cm-1)的伸缩振动模的强度逐渐增大,并向低频方向移动,而Cu(1)O(4)(590cm-1)的震动模逐渐向高频方向移动.电子顺磁共振实验(EPR)揭示了不同含量的Al掺杂对Cu2＋的自旋关联行为的影响.本文对不同掺杂区的声子振动、自旋关联变化和输运性质进行了分析讨论.
参考文献
| [1] | D Goldschmidt;A Knizhnik;Y Direktoritch;G M Reisner,,Y Eckstein .[J].Physical Review B,1994,49:15928. |
| [2] | Minoru Osada;Masato Kakihana;Mikael KAall;Lars Brjesson .[J].Physics Letters,2002,81:4988. |
| [3] | Biao Liu;G J Xu;R H Tao;ZAXu ,JQShen ,QRPu,GSWang,dZJDing.(2004,in press)[J].Physica C,2004 |
| [4] | J G Bednorz;K A M ller.Earlier,Recent Aapects of Superconductivity,90,3691 of Springer series of solid stare sciences[M].Berlin:Springer-Verlag,1990 |
| [5] | H Takagi et al.[J].Physical Review B,1989,40:2254. |
| [6] | Felix Yndurain;Gerardo Mart nez .[J].Physical Review B,1991,43:3691. |
| [7] | R J Birgeneau et al.[J].Physical Review B,1988,38:6614. |
| [8] | J M Tranquada et al.[J].Physical Review Letters,1990,64:800. |
| [9] | P W Anderson .[J].Science,1987,235:1196. |
| [10] | J E Eldridge;F E Bates .[J].Solid State Communications,1989,70:153. |
| [11] | R Liu;C Thomsen;W Kress;M Cardona,B Gegenheimer,F W deWette,J Prade,A D Kulkarni,U Schroder .[J].Physical Review B,1988,37:7971. |
| [12] | J Chen;L Xie;Y Zhao;P Cai,H Gu .[J].Physica C,1989,159:317. |
| [13] | M K Crawford;W E Farneth;E M McCarron III;R K Bordia .[J].Physical Review B,1988,38:11382. |
| [14] | H Kuzmany;M Matus;E Faulques;S Pekker,Gy Huitray,E Zsoldos,L Mihaly .[J].Solid State Communications,1988,65:1343. |
| [15] | L C Sengupta;B Roughani;J Aubel;S Sundaram,W C H Joiner .[J].Physica C,1990,165:125. |
| [16] | F E Bates .[J].Physical Review B,1989,39:322. |
| [17] | R Feile .[J].Physica C,1989,159:1. |
| [18] | R Feile;J Kowalewsk;W Assmus .[J].Physica C,1988,152:491. |
| [19] | B Roughani;L C Sengupta;S Sundaram;W C H Joiner,Z Phys B .[J].Condensed Matter,1992,86:3. |
| [20] | E Brecht;W W Schmahl;H Fuess .[J].Physical Review B,1997,56:940. |
| [21] | J M Tarascon;P Barboux;P F Miceli;L H Greene,,G W Hull .[J].Physical Review B,1988,37:7458. |
| [22] | Alex Punnoose et al.[J].International Journal of Modern Physics B,1995,9:1123. |
| [23] | A Deville;B Gaillard;H Noel;M Potel P Gougeon J C Levet .[J].Journal of Physics:Condensed Matter,1989,50:2357. |
| [24] | R N De Mesquita;J H Castilho;G E Barberis;C Rettori,I Torriani,O F De Lima,S Gama,R F Jardim,M C Terrile,H Basso,O R Nascimento .[J].Physical Review B,1989,39:6694. |
| [25] | R Jones;R Janes;R Armstrong;N C Pyper,P P Edwards,D J Keeble,M R Harrison .[J].Journal of the Chemical Society,Faraday Transactions,1990,86:675. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%