Magnetic and crystallographic characterization of Pt3MnxCr1-x by XMCD and x-ray diffraction

被引：2

作者：

Baudelet, F. ^{[1
,2
]}

Mathon, O. ^{[3
]}

Itie, J. P. ^{[1
]}

Polian, A. ^{[1
]}

Kappler, J. P. ^{[4
]}

Pascarelli, S. ^{[3
]}

机构：

[1] Univ Paris 06, CNRS, IMPMC, UMR 7590, F-75015 Paris, France

[2] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France

[3] ESRF, F-38000 Grenoble, France

[4] IPCMS GEMME, F-67037 Strasbourg, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 34期

关键词：

CIRCULAR-DICHROISM; ALLOYS; CO; PRESSURE; MN; CR;

D O I：

10.1088/0953-8984/21/34/346003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have performed XMCD and diffraction measurements on the Pt3MnxCr1-x alloy, which show that the magnetization of Pt is independently influenced by the Mn or Cr 3d orbital. We find that the magnetic moment on Pt, and its decomposition into spin and orbital components, is uniquely determined by the relative number of Mn and Cr neighbors. We then investigate the effect of pressure on the magnetization of Pt in the Pt3Mn0.5Cr0.5 alloy. Our high pressure data enable us to conclude that at 14 GPa the spin and orbital polarization of the Pt 5d band are augmented by about 70%, with no interaction between them.

引用

页数：7

共 18 条

[1] Electronic structure and x-ray magnetic circular dichroism in Cu3Au-type transition metal platinum alloys -: art. no. 024402 [J].

Antonov, VN ;

Harmon, BN ;

Yaresko, AN .

PHYSICAL REVIEW B, 2001, 64 (02)

[2]

BOOTH JG, 1988, FERROMAGNETIC MAT, V4

[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]

Franzen R., 1986, NORD PULP PAP RES J, V3, P4

[5] XMCD at the L-2,3-edges of Pt in ordered TPt3 alloys (T = Cr, Mn, Co) [J].

Grange, W ;

Kappler, JP ;

Maret, M ;

Rogalev, A ;

Goulon, J .

JOURNAL OF SYNCHROTRON RADIATION, 1999, 6 :679-681

[6] Orbital and spin magnetic moments of TPt3 (T=V,Cr,Mn,Fe, and Co) [J].

Iwashita, K ;

Oguchi, T ;

Jo, T .

PHYSICAL REVIEW B, 1996, 54 (02) :1159-1162

[7] ELECTRONIC-PROPERTIES OF PT0.75(MN1-XCRX)0.25 ALLOYS [J].

JEZIERSKI, A .

PHYSICA B-CONDENSED MATTER, 1993, 190 (2-3) :225-230

[8] Comparison of theoretical and experimental magnetization densities of Ni, Pt3Cr, and Pd3Cr [J].

Lu, ZW ;

Klein, BM ;

Chau, HT .

PHYSICAL REVIEW B, 1998, 58 (14) :9252-9263

[9] 5D ELECTRONIC STATES IN PT ALLOYS PROBED BY MAGNETIC CIRCULAR X-RAY DICHROISM [J].

MARUYAMA, H ;

MATSUOKA, F ;

KOBAYASHI, K ;

YAMAZAKI, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 :43-44

[10]

MARUYAMA H, 1998, COMMUNICATION

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