TY - JOUR
T1 - The magnetic properties of sputtered Pd1-xMnx films for thermometry and bolometry
AU - Nelson, R. C.
AU - Sergatskov, D. A.
AU - Duncan, R. V.
N1 - Funding Information:
We wish to thank Dr. Peter Day, who first suggested the use of dilute magnetic ions in Pd for thermometry near 2 K. R. C. Nelson wishes to acknowledge the support of the United States Army. This work was performed under NASA JPL Grant No. 960494.
PY - 2002
Y1 - 2002
N2 - The magnetic susceptibility of thin films and microstructures consisting of a Pd1Mnx alloy have been measured as a function of temperature and magnetic field. Sputtering from a 0.68% manganese target produced films with a concentration of approximately 0.90%, as judged by comparison with results from bulk PdMn sensitivity measurements. The thinnest films (thickness ≤ 1.0μm) show significant domain scale noise below the Curie Temperature, Tc, while thicker films (thickness ≥ 10 μm) show reliable non-hysteretic behavior throughout the temperature range of interest. The thin films show the effects of demagnetization with the field perpendicular to the surface, but a fine screen in this orientation shows no evidence of saturation and a predictable decrease in sensitivity due to demagnetization. These films will serve as the thermometric element in a new class of bolometers and thermometers for fundamental physics applications.
AB - The magnetic susceptibility of thin films and microstructures consisting of a Pd1Mnx alloy have been measured as a function of temperature and magnetic field. Sputtering from a 0.68% manganese target produced films with a concentration of approximately 0.90%, as judged by comparison with results from bulk PdMn sensitivity measurements. The thinnest films (thickness ≤ 1.0μm) show significant domain scale noise below the Curie Temperature, Tc, while thicker films (thickness ≥ 10 μm) show reliable non-hysteretic behavior throughout the temperature range of interest. The thin films show the effects of demagnetization with the field perpendicular to the surface, but a fine screen in this orientation shows no evidence of saturation and a predictable decrease in sensitivity due to demagnetization. These films will serve as the thermometric element in a new class of bolometers and thermometers for fundamental physics applications.
UR - http://www.scopus.com/inward/record.url?scp=0036247750&partnerID=8YFLogxK
U2 - 10.1023/A:1014808313480
DO - 10.1023/A:1014808313480
M3 - Article
AN - SCOPUS:0036247750
VL - 127
SP - 173
EP - 188
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 3-4
ER -