Vortex pinning and magnetic peak effect in Eu(Eu,Ba)2.125Cu3Ox

被引：16

作者：

Altin, E. ^{[1
]}

Gokhfeld, D. M. ^{[2
]}

Demirel, S. ^{[1
]}

Oz, E. ^{[1
]}

Kurt, F. ^{[1
]}

Altin, S. ^{[3
]}

Yakinci, M. E. ^{[3
]}

机构：

[1] Inonu Univ, Bilimsel & Teknolojik Arastirma Merkezi, TR-44280 Malatya, Turkey

[2] LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia

[3] Inonu Univ, Fen Edebiyat Fak, Fizik Bolumu, Superiletkenlik Arastirma Grubu, TR-44280 Malatya, Turkey

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2014年 / 25卷 / 03期

关键词：

SUPERCONDUCTORS; FIELD; NANOCRYSTALLINE; TEMPERATURE; LOOP;

D O I：

10.1007/s10854-014-1753-1

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Eu-Ba-Cu-O composition was synthesized by solid state reaction technique. To determine optimum growth temperature, heat treatment was examined on the material at 880-1,100 A degrees C. Microstructural evolution, phase formation and elemental distribution depending on heat treatments were examined by using X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectroscope analysis. Optimum fabrication conditions were determined as 1,020 A degrees C for 24 h under oxygen atmosphere and detailed characterization of corresponding compound was performed. The magnetization hysteresis loops are expounded to be the product of superconducting Eu-123 grains and magnetic Eu2+ ions. The peak effect on the magnetization curves was described by the extended critical state model. Scaling of the pinning force was found such that the peak position is proportional to the irreversibility field H (irr) and the maximum pinning force is proportional to H (irr) (2) .

引用

页码：1466 / 1473

页数：8

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