by C. Sánchez-Hanke, R. Gonzalez-Arrabal, J. E. Prieto, E. Andrzejewska, N. Gordillo, D. O. Boerma, R. Loloee, J. Skuza and R. A. Lukaszew
Abstract:
X-ray magnetic circular dichroism (XMCD) measurements were performed on epitaxial iron nitride thin films at the nitrogen KKtextlessmath display=”inline” overflow=”scroll” altimg=”eq-00002.gif”textgreatertextlessmrowtextgreatertextlessmitextgreaterKtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater and at the Fe LIIILIIItextlessmath display=”inline” overflow=”scroll” altimg=”eq-00003.gif”textgreatertextlessmrowtextgreatertextlessmsubtextgreatertextlessmitextgreaterLtextless/mitextgreatertextlessmitextgreaterIIItextless/mitextgreatertextless/msubtextgreatertextless/mrowtextgreatertextless/mathtextgreater and LIILIItextlessmath display=”inline” overflow=”scroll” altimg=”eq-00004.gif”textgreatertextlessmrowtextgreatertextlessmsubtextgreatertextlessmitextgreaterLtextless/mitextgreatertextlessmitextgreaterIItextless/mitextgreatertextless/msubtextgreatertextless/mrowtextgreatertextless/mathtextgreater absorption edges. The iron nitride samples measured with XMCD consist primarily of γ′γ′textlessmath display=”inline” overflow=”scroll” altimg=”eq-00005.gif”textgreatertextlessmrowtextgreatertextlessmsuptextgreatertextlessmitextgreaterγtextless/mitextgreatertextlessmotextgreater′textless/motextgreatertextless/msuptextgreatertextless/mrowtextgreatertextless/mathtextgreater phase with no observed enhancement on their magnetic moment as compared to that of pure Fe. The XMCD difference signal between left and right elliptically polarized x rays shows a small effect in the 10−510−5textlessmath display=”inline” overflow=”scroll” altimg=”eq-00006.gif”textgreatertextlessmrowtextgreatertextlessmsuptextgreatertextlessmntextgreater10textless/mntextgreatertextlessmrowtextgreatertextlessmotextgreater−textless/motextgreatertextlessmntextgreater5textless/mntextgreatertextless/mrowtextgreatertextless/msuptextgreatertextless/mrowtextgreatertextless/mathtextgreater range at the NNtextlessmath display=”inline” overflow=”scroll” altimg=”eq-00007.gif”textgreatertextlessmrowtextgreatertextlessmitextgreaterNtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater edge, indicative of the possible polarization of nitrogen in the γ′γ′textlessmath display=”inline” overflow=”scroll” altimg=”eq-00008.gif”textgreatertextlessmrowtextgreatertextlessmsuptextgreatertextlessmitextgreaterγtextless/mitextgreatertextlessmotextgreater′textless/motextgreatertextless/msuptextgreatertextless/mrowtextgreatertextless/mathtextgreater Fe–NFe–Ntextlessmath display=”inline” overflow=”scroll” altimg=”eq-00009.gif”textgreatertextlessmrowtextgreatertextlessmitextgreaterFetextless/mitextgreatertextlessmotextgreater–textless/motextgreatertextlessmi mathvariant=”normal”textgreaterNtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater samples. XMCD spectra collected with higher energy resolution reveal the presence of multiple components in the Fe LIIILIIItextlessmath display=”inline” overflow=”scroll” altimg=”eq-00010.gif”textgreatertextlessmrowtextgreatertextlessmsubtextgreatertextlessmitextgreaterLtextless/mitextgreatertextlessmitextgreaterIIItextless/mitextgreatertextless/msubtextgreatertextless/mrowtextgreatertextless/mathtextgreater absorption edge that are related to different environments for the Fe atoms, i.e., near neighbors or next near neighbors to the NNtextlessmath display=”inline” overflow=”scroll” altimg=”eq-00011.gif”textgreatertextlessmrowtextgreatertextlessmitextgreaterNtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater sites. Finally element specific hysteresis loops were also recorded at the N and Fe absorption edges using the difference signal in various incident beam angle geometries.
Reference:
C. Sánchez-Hanke, R. Gonzalez-Arrabal, J. E. Prieto, E. Andrzejewska, N. Gordillo, D. O. Boerma, R. Loloee, J. Skuza and R. A. Lukaszew, “Observation of nitrogen polarization in Fe–N using soft x-ray magnetic circular dichroism”, Journal of Applied Physics, vol. 99, no. 8, pp. 08B709.
Bibtex Entry:
@article{sanchez-hanke_observation_2006,
title = {Observation of nitrogen polarization in {Fe}–{N} using soft x-ray magnetic circular dichroism},
volume = {99},
issn = {0021-8979},
url = {http://aip.scitation.org/doi/10.1063/1.2176024},
doi = {10.1063/1.2176024},
abstract = {X-ray magnetic circular dichroism (XMCD) measurements were performed on epitaxial iron nitride thin films at the nitrogen KK{textless}math display="inline" overflow="scroll" altimg="eq-00002.gif"{textgreater}{textless}mrow{textgreater}{textless}mi{textgreater}K{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} and at the Fe LIIILIII{textless}math display="inline" overflow="scroll" altimg="eq-00003.gif"{textgreater}{textless}mrow{textgreater}{textless}msub{textgreater}{textless}mi{textgreater}L{textless}/mi{textgreater}{textless}mi{textgreater}III{textless}/mi{textgreater}{textless}/msub{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} and LIILII{textless}math display="inline" overflow="scroll" altimg="eq-00004.gif"{textgreater}{textless}mrow{textgreater}{textless}msub{textgreater}{textless}mi{textgreater}L{textless}/mi{textgreater}{textless}mi{textgreater}II{textless}/mi{textgreater}{textless}/msub{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} absorption edges. The iron nitride samples measured with XMCD consist primarily of γ′γ′{textless}math display="inline" overflow="scroll" altimg="eq-00005.gif"{textgreater}{textless}mrow{textgreater}{textless}msup{textgreater}{textless}mi{textgreater}γ{textless}/mi{textgreater}{textless}mo{textgreater}′{textless}/mo{textgreater}{textless}/msup{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} phase with no observed enhancement on their magnetic moment as compared to that of pure Fe. The XMCD difference signal between left and right elliptically polarized x rays shows a small effect in the 10−510−5{textless}math display="inline" overflow="scroll" altimg="eq-00006.gif"{textgreater}{textless}mrow{textgreater}{textless}msup{textgreater}{textless}mn{textgreater}10{textless}/mn{textgreater}{textless}mrow{textgreater}{textless}mo{textgreater}−{textless}/mo{textgreater}{textless}mn{textgreater}5{textless}/mn{textgreater}{textless}/mrow{textgreater}{textless}/msup{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} range at the NN{textless}math display="inline" overflow="scroll" altimg="eq-00007.gif"{textgreater}{textless}mrow{textgreater}{textless}mi{textgreater}N{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} edge, indicative of the possible polarization of nitrogen in the γ′γ′{textless}math display="inline" overflow="scroll" altimg="eq-00008.gif"{textgreater}{textless}mrow{textgreater}{textless}msup{textgreater}{textless}mi{textgreater}γ{textless}/mi{textgreater}{textless}mo{textgreater}′{textless}/mo{textgreater}{textless}/msup{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} Fe–NFe–N{textless}math display="inline" overflow="scroll" altimg="eq-00009.gif"{textgreater}{textless}mrow{textgreater}{textless}mi{textgreater}Fe{textless}/mi{textgreater}{textless}mo{textgreater}–{textless}/mo{textgreater}{textless}mi mathvariant="normal"{textgreater}N{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} samples. XMCD spectra collected with higher energy resolution reveal the presence of multiple components in the Fe LIIILIII{textless}math display="inline" overflow="scroll" altimg="eq-00010.gif"{textgreater}{textless}mrow{textgreater}{textless}msub{textgreater}{textless}mi{textgreater}L{textless}/mi{textgreater}{textless}mi{textgreater}III{textless}/mi{textgreater}{textless}/msub{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} absorption edge that are related to different environments for the Fe atoms, i.e., near neighbors or next near neighbors to the NN{textless}math display="inline" overflow="scroll" altimg="eq-00011.gif"{textgreater}{textless}mrow{textgreater}{textless}mi{textgreater}N{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} sites. Finally element specific hysteresis loops were also recorded at the N and Fe absorption edges using the difference signal in various incident beam angle geometries.},
number = {8},
urldate = {2017-07-21},
journal = {Journal of Applied Physics},
author = {Sánchez-Hanke, C. and Gonzalez-Arrabal, R. and Prieto, J. E. and Andrzejewska, E. and Gordillo, N. and Boerma, D. O. and Loloee, R. and Skuza, J. and Lukaszew, R. A.},
month = apr,
year = {2006},
pages = {08B709},
file = {Full Text PDF:E:\cmam_papers\files\574\Sánchez-Hanke et al. - 2006 - Observation of nitrogen polarization in Fe–N using.pdf:application/pdf;Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\ZTSSLVQM\Sánchez-Hanke et al. - 2006 - Observation of nitrogen polarization in Fe–N using.pdf:application/pdf;Snapshot:E:\cmam_papers\files\577\1.html:text/html;Snapshot:E:\Usuarios\Administrator\Zotero\storage\Y8X2EP7C\1.html:text/html},
}