Local increase of the Curie temperature in Mn/Fe implanted Y3Fe5O12 (YIG)

被引：7

作者：

Krastev, P. B. ^{[1
]}

Gunnlaugsson, H. P. ^{[2
]}

Nomura, K. ^{[3
]}

Bharuth-Ram, K. ^{[4
,5
]}

Qi, B. ^{[2
]}

Masenda, H. ^{[6
]}

Molholt, T. E. ^{[7
,8
]}

Naidoo, D. ^{[6
]}

Olafsson, S. ^{[2
]}

Martin-Luengo, A. Tarazaga ^{[9
]}

Unzueta, I ^{[10
]}

Johnston, K. ^{[8
]}

Schell, J. ^{[8
,11
,12
]}

Gislason, H. P. ^{[2
]}

机构：

[1] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, 72 Tsarigradsko Chaussee Blvd, Sofia 1784, Bulgaria

[2] Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland

[3] Tokyo Metropolitan Univ, Radioisotope Ctr, Minami Osawa 1-1, Tokyo 1920397, Japan

[4] Durban Univ Technol, Phys Dept, ZA-4000 Durban, South Africa

[5] Univ KwaZulu Natal, Sch Phys, ZA-4001 Durban, South Africa

[6] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[7] DTU Nutech, Riso Campus,Fredergcsborgvej 399,B201, Roskilde 4000, Denmark

[8] CERN, ISOLDE, EP Dept, CH-1211 Geneva 23, Switzerland

[9] Johannes Kepler Univ Linz, Magnet Spin Mat Grp, Inst Semicond & Solid State Phys, Altenbergerstr 69, Linz, Austria

[10] Univ Basque Country, Dept Appl Phys 2, Leioa 48940, Spain

[11] Univ Duisburg Essen, Inst Mat Sci, D-45141 Essen, Germany

[12] Univ Duisburg Essen, Ctr Nanointegrat Duisburg Essen CENIDE, D-45141 Essen, Germany

来源：

APPLIED RADIATION AND ISOTOPES | 2020年 / 160卷

关键词：

Yttrium iron garnet Y3Fe5O12 (YIG); Mn-57; implantation; Emission; Mossbauer spectroscopy; Local Curie temperature; MAGNETIC-PROPERTIES; MOSSBAUER; BI;

D O I：

10.1016/j.apradiso.2020.109121

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The change in the Curie temperature of single crystalline garnet Y3Fe5O12 (YIG) sample due to lattice damage induced by ion implantation has been investigated in Fe-57 emission Mossbauer Spectroscopy (eMS) following implantation of Mn-57 (T-1/2 = 1.5 min). The Mossbauer spectra analysis reveal high spin Fe3+ ions substituted on both the octahedral and the tetrahedral sites. Measurements in the temperature range 298 K-798 K show that average values of the magnetic hyperfine field are decreased by the implantation-induced damage on the local lattice structure of the YIG. The Curie temperature, however, is determined to be 651 + 5 K, considerably higher than the value of bulk YIG (559 K). This is most likely due to lattice damage-induced changes on the spin configurations of YIG through a Fe-A-0-Fe-D distortion scheme.

引用

页数：5

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