Abstract
X-ray magnetic circular dichroism (XMCD) measurements on Yb14MnSb11 provide experimental evidence of a moment of 5 μB on Mn, with partial cancellation by an opposing moment on the Sb4 cage surrounding each Mn ion. The compound is isostructural to Ca14AISb11, with Mn occupying the AI site in the AISb4 9- discrete tetrahedral, anionic unit. Bulk magnetization measurements indicate a saturation moment of 3.90 ± 0.02 μB/formula unit consistent with four unpaired spins and implying a Mn3+, high-spin d4 state. XMCD measurements reveal that there is strong dichroism in the Mn L23 edge, the Sb M45 edge shows a weak dichroism indicating antialignment to the Mn, and the Yb N45 edge shows no dichroism. Comparisons of the Mn spectra with theoretical models for Mn2+ show excellent agreement. The bulk magnetization can be understood as Mn with a moment of 5 μB and a 2+ configuration, with cancellation of one spin by an antialigned moment from the Sb 5p band of the Sb4 cage surrounding the Mn.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 9894-9898 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 124 |
| Issue number | 33 |
| DOIs | |
| State | Published - Aug 21 2002 |
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XMCD characterization of the ferromagnetic state of Yb14MnSb11 . / Holm, Aaron P.; Kauzlarich, Susan M.; Morton, Simon A.; Waddill, G. Dan; Pickett, Warren E.; Tobin, James G.
In: Journal of the American Chemical Society, Vol. 124, No. 33, 21.08.2002, p. 9894-9898.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - XMCD characterization of the ferromagnetic state of Yb14MnSb11
AU - Holm, Aaron P.
AU - Kauzlarich, Susan M.
AU - Morton, Simon A.
AU - Waddill, G. Dan
AU - Pickett, Warren E.
AU - Tobin, James G.
PY - 2002/8/21
Y1 - 2002/8/21
N2 - X-ray magnetic circular dichroism (XMCD) measurements on Yb14MnSb11 provide experimental evidence of a moment of 5 μB on Mn, with partial cancellation by an opposing moment on the Sb4 cage surrounding each Mn ion. The compound is isostructural to Ca14AISb11, with Mn occupying the AI site in the AISb4 9- discrete tetrahedral, anionic unit. Bulk magnetization measurements indicate a saturation moment of 3.90 ± 0.02 μB/formula unit consistent with four unpaired spins and implying a Mn3+, high-spin d4 state. XMCD measurements reveal that there is strong dichroism in the Mn L23 edge, the Sb M45 edge shows a weak dichroism indicating antialignment to the Mn, and the Yb N45 edge shows no dichroism. Comparisons of the Mn spectra with theoretical models for Mn2+ show excellent agreement. The bulk magnetization can be understood as Mn with a moment of 5 μB and a 2+ configuration, with cancellation of one spin by an antialigned moment from the Sb 5p band of the Sb4 cage surrounding the Mn.
AB - X-ray magnetic circular dichroism (XMCD) measurements on Yb14MnSb11 provide experimental evidence of a moment of 5 μB on Mn, with partial cancellation by an opposing moment on the Sb4 cage surrounding each Mn ion. The compound is isostructural to Ca14AISb11, with Mn occupying the AI site in the AISb4 9- discrete tetrahedral, anionic unit. Bulk magnetization measurements indicate a saturation moment of 3.90 ± 0.02 μB/formula unit consistent with four unpaired spins and implying a Mn3+, high-spin d4 state. XMCD measurements reveal that there is strong dichroism in the Mn L23 edge, the Sb M45 edge shows a weak dichroism indicating antialignment to the Mn, and the Yb N45 edge shows no dichroism. Comparisons of the Mn spectra with theoretical models for Mn2+ show excellent agreement. The bulk magnetization can be understood as Mn with a moment of 5 μB and a 2+ configuration, with cancellation of one spin by an antialigned moment from the Sb 5p band of the Sb4 cage surrounding the Mn.
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UR - http://www.scopus.com/inward/citedby.url?scp=0037151569&partnerID=8YFLogxK
U2 - 10.1021/ja020564y
DO - 10.1021/ja020564y
M3 - Article
C2 - 12175250
AN - SCOPUS:0037151569
VL - 124
SP - 9894
EP - 9898
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 33
ER -