Magnetic properties and electronic structures of (Ru,Fe) and (Rh,Fe) alloys

Hong Ju Moon; Won Dong Kim; S. J. Oh; Jungwhan Park; J. G. Park; E. J. Cho; J. I. Lee; H. C. Ri

Magnetic properties and electronic structures of (Ru,Fe) and (Rh,Fe) alloys

Hong Ju Moon, Won Dong Kim, S. J. Oh, Jungwhan Park, J. G. Park, E. J. Cho, J. I. Lee, H. C. Ri

Department of Physics

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We studied Ru_x Fe_1-x (x = 0.30, 0.50, and 0.75), Rh_0.75Fe_0.25, and Rh_0.25,Fe_0.75 alloys in order to investigate how the electronic structures and the magnetic properties of those alloys changed depending on the crystallographic structures; e.g., hep, fee, and bcc. Magnetization and ac susceptibility measurements showed that Rh_0.25Fe_0.75 (bcc) was ferromagnetic even at room temperature while Rh_0.75Fe_0.25 (fcc) was weakly antiferromagnetic with T_N ≃ 80 K. On the other hand, Ru_0.30Fe_0.70 (hcp) was antiferromagnetic below about 130 K while Ru_xFe_1-x with x = 0.50 and 0.75 (both hcp) remained paramagnetic down to 5 K. From the Fe 3d partial spectra obtained using the Cooper minimum phenomena of the Ru 4d and the Rh 4d bands, we found that the Fe 3d partial spectra were almost the same for all the alloys, regardless of the different structures and the magnetic ground states.

Original language	English
Pages (from-to)	49-53
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	36
Issue number	1
State	Published - Jan 2000

Cite this

@article{bd6738b6126d4724ba91053121f9f768,

title = "Magnetic properties and electronic structures of (Ru,Fe) and (Rh,Fe) alloys",

abstract = "We studied Rux Fe1-x (x = 0.30, 0.50, and 0.75), Rh0.75Fe0.25, and Rh0.25,Fe0.75 alloys in order to investigate how the electronic structures and the magnetic properties of those alloys changed depending on the crystallographic structures; e.g., hep, fee, and bcc. Magnetization and ac susceptibility measurements showed that Rh0.25Fe0.75 (bcc) was ferromagnetic even at room temperature while Rh0.75Fe0.25 (fcc) was weakly antiferromagnetic with TN ≃ 80 K. On the other hand, Ru0.30Fe0.70 (hcp) was antiferromagnetic below about 130 K while RuxFe1-x with x = 0.50 and 0.75 (both hcp) remained paramagnetic down to 5 K. From the Fe 3d partial spectra obtained using the Cooper minimum phenomena of the Ru 4d and the Rh 4d bands, we found that the Fe 3d partial spectra were almost the same for all the alloys, regardless of the different structures and the magnetic ground states.",

author = "Moon, {Hong Ju} and Kim, {Won Dong} and Oh, {S. J.} and Jungwhan Park and Park, {J. G.} and Cho, {E. J.} and Lee, {J. I.} and Ri, {H. C.}",

year = "2000",

month = jan,

language = "English",

volume = "36",

pages = "49--53",

journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - Magnetic properties and electronic structures of (Ru,Fe) and (Rh,Fe) alloys

AU - Moon, Hong Ju

AU - Kim, Won Dong

AU - Oh, S. J.

AU - Park, Jungwhan

AU - Park, J. G.

AU - Cho, E. J.

AU - Lee, J. I.

AU - Ri, H. C.

PY - 2000/1

Y1 - 2000/1

N2 - We studied Rux Fe1-x (x = 0.30, 0.50, and 0.75), Rh0.75Fe0.25, and Rh0.25,Fe0.75 alloys in order to investigate how the electronic structures and the magnetic properties of those alloys changed depending on the crystallographic structures; e.g., hep, fee, and bcc. Magnetization and ac susceptibility measurements showed that Rh0.25Fe0.75 (bcc) was ferromagnetic even at room temperature while Rh0.75Fe0.25 (fcc) was weakly antiferromagnetic with TN ≃ 80 K. On the other hand, Ru0.30Fe0.70 (hcp) was antiferromagnetic below about 130 K while RuxFe1-x with x = 0.50 and 0.75 (both hcp) remained paramagnetic down to 5 K. From the Fe 3d partial spectra obtained using the Cooper minimum phenomena of the Ru 4d and the Rh 4d bands, we found that the Fe 3d partial spectra were almost the same for all the alloys, regardless of the different structures and the magnetic ground states.

AB - We studied Rux Fe1-x (x = 0.30, 0.50, and 0.75), Rh0.75Fe0.25, and Rh0.25,Fe0.75 alloys in order to investigate how the electronic structures and the magnetic properties of those alloys changed depending on the crystallographic structures; e.g., hep, fee, and bcc. Magnetization and ac susceptibility measurements showed that Rh0.25Fe0.75 (bcc) was ferromagnetic even at room temperature while Rh0.75Fe0.25 (fcc) was weakly antiferromagnetic with TN ≃ 80 K. On the other hand, Ru0.30Fe0.70 (hcp) was antiferromagnetic below about 130 K while RuxFe1-x with x = 0.50 and 0.75 (both hcp) remained paramagnetic down to 5 K. From the Fe 3d partial spectra obtained using the Cooper minimum phenomena of the Ru 4d and the Rh 4d bands, we found that the Fe 3d partial spectra were almost the same for all the alloys, regardless of the different structures and the magnetic ground states.

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M3 - Article

AN - SCOPUS:0034344997

SN - 0374-4884

VL - 36

SP - 49

EP - 53

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 1

ER -

Magnetic properties and electronic structures of (Ru,Fe) and (Rh,Fe) alloys

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