Spin and orbital magnetic moments of molecular beam epitaxy γ′-Fe4N films on LaAlO3(001) and MgO(001) substrates by x-ray magnetic circular dichroism

被引：36

作者：

Ito, K. ^{[1
]}

Lee, G. H. ^{[1
]}

Harada, K. ^{[1
]}

Suzuno, M. ^{[1
]}

Suemasu, T. ^{[1
]}

Takeda, Y. ^{[2
]}

Saitoh, Y. ^{[2
]}

Ye, M. ^{[3
]}

Kimura, A. ^{[3
]}

Akinaga, H. ^{[4
]}

机构：

[1] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

[2] SPring 8, Japan Atom Energy Agcy, Sayo Cho, Hyogo 6795198, Japan

[3] Hiroshima Univ, Grad Sch Sci, Hiroshima 7398526, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba 3058568, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 10期

关键词：

FIELDS; FE4N;

D O I：

10.1063/1.3564887

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

10-nm-thick gamma'-Fe4N films were grown epitaxially on LaAlO3(001) and MgO(001) substrates by molecular beam epitaxy using solid Fe and a radio-frequency NH3 plasma. The lattice mismatch of these substrates to gamma'-Fe4N is 0% and 11%, respectively. Spin and orbital magnetic moments of these gamma'-Fe4N epitaxial films were deduced by x-ray magnetic circular dichroism measurements at 300 K. The total magnetic moments are almost the same for the two substrates, that is, 2.44 +/- 0.06 mu(B) and 2.47 +/- 0.06 mu(B), respectively. These values are very close to those predicted theoretically, and distinctively larger than that for alpha-Fe. (C) 2011 American Institute of Physics. [doi:10.1063/1.3564887]

引用

页数：3

共 14 条

[1] Scaling of the L2,3 circular magnetic x-ray dichroism of Fe nitrides [J].

Alouani, M ;

Wills, JM ;

Wilkins, JW .

PHYSICAL REVIEW B, 1998, 57 (16) :9502-9506

[2] Effect of epitaxy and lattice mismatch on saturation magnetization of γ′-Fe4N thin films [J].

Atiq, Shahid ;

Ko, Hyun-Seok ;

Siddiqi, Saadat Anwar ;

Shin, Sung-Chul .

APPLIED PHYSICS LETTERS, 2008, 92 (22)

[3] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS [J].

CARRA, P ;

THOLE, BT ;

ALTARELLI, M ;

WANG, XD .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :694-697

[4] EXPERIMENTAL CONFIRMATION OF THE X-RAY MAGNETIC CIRCULAR-DICHROISM SUM-RULES FOR IRON AND COBALT [J].

CHEN, CT ;

IDZERDA, YU ;

LIN, HJ ;

SMITH, NV ;

MEIGS, G ;

CHABAN, E ;

HO, GH ;

PELLEGRIN, E ;

SETTE, F .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :152-155

[5]

HANKE CS, 2006, J APPL PHYS, V99

[6] Pressure-induced magnetic transition in Fe4N probed by FeK-edge XMCD measurement [J].

Ishimatsu, N ;

Maruyama, H ;

Kawamura, N ;

Suzuki, M ;

Ohishi, Y ;

Ito, M ;

Nasu, S ;

Kawakami, T ;

Shimomura, O .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2003, 72 (09) :2372-2376

[7] Theoretical analysis of highly spin-polarized transport in the iron nitride Fe4N [J].

Kokado, Satoshi ;

Fujima, Nobuhisa ;

Harigaya, Kikuo ;

Shimizu, Hisashi ;

Sakuma, Akimasa .

PHYSICAL REVIEW B, 2006, 73 (17)

[8] 75% inverse magnetoresistance at room temperature in Fe4N/MgO/CoFeB magnetic tunnel junctions fabricated on Cu underlayer [J].

Komasaki, Yosuke ;

Tsunoda, Masakiyo ;

Isogami, Shinji ;

Takahashi, Migaku .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[9] Spin polarization of Fe4N thin films determined by point-contact Andreev reflection [J].

Narahara, A. ;

Ito, K. ;

Suemasu, T. ;

Takahashi, Y. K. ;

Ranajikanth, A. ;

Hono, K. .

APPLIED PHYSICS LETTERS, 2009, 94 (20)

[10] The magnetization of γ′-Fe4N: theory vs. experiment [J].

Peltzer y Blanca, Eitel L. ;

Desimoni, Judith ;

Christensen, Niels E. ;

Emmerich, Heike ;

Cottenier, Stefaan .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2009, 246 (05) :909-928

← 1 2 →