####################################################
# Evguenia Karapetrova <jenia@anl.gov>
# requesting 3 days, at minimum=2 days
# beamline 33BM, Temperature dependent lattice changes due to in-plane Orbital Ordering of Manganite superlattices.
# instrument 33BM-C fourc
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# top:/home/www/beamtime-requests/req01215.txt
# UNICAT Member Beam Time Request  #1215
# created Wed Apr 09 14:47:34 CDT 2008
####################################################

apsrun:
	2008-02

beamline:
	33BM

collaboration:
	Yes

collaborator_Jenia:
	ON

contact:
	jenia@anl.gov

days:
	3

description:
	Previous measurements of the out of plane lattice lengths of superlattice films correlates with temperature dependent resistivity measurements. The hypothesis is that as the orbital ordering in the plane of the film improves (coherency improves) by building the appropriate Sr doping of a LSMO film by using the appropriate repeating layers of LMO and SMO in a superlattice fashion. The ordering temperature(resistivity drop) shifts higher with this method.

We found  evidence of a corresponding lattice compression as the resistance decreases. 

To complete this data the random Sr doped LSMO film needs to be remeasured above 400K. and one of the engineered superlattice structures needs to be studied again as an unusual shift in lattice length was measured above 400K which we need to understand the nature of, i.e. an experimental error or is it a real phenomenon.

equipment_required:
	High Temperature Displex coordinate with sector 4

experiment:
	Temperature dependent lattice changes due to in-plane Orbital Ordering of Manganite superlattices.

foreign_nationals:
	

hazards:
	

instrument:
	33BM-C fourc

instrument_other:
	

minimumdays:
	2

name:
	Evguenia Karapetrova

nonmembers:
	Philip Ryan 6-ID

submit:
	Submit

unacceptable_dates:
	19th June - 4 July 2008

z34ID_details:
	


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