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Title: High Precision Detection of Change in Intermediate Range Order of Amorphous Zirconia-Doped Tantala Thin Films Due to Annealing

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [6];  [7];  [8];  [8];  [9];  [10];  [9];  [1];  [9];  [6];  [9];  [11];  [4] more »;  [9];  [9];  [10];  [10];  [9];  [7];  [2];  [1];  [12];  [1] « less
  1. Stanford Univ., CA (United States). E. L. Ginzton Lab.
  2. Univ. of Florida, Gainesville, FL (United States). Dept. of Physics and Quantum Theory Project
  3. Univ. of Dayton Research Inst., Dayton, OH (United States)
  4. Univ. of Strathclyde, Glasgow (United Kingdom). Dept. of Biomedical Engineering
  5. The Ohio Univ., Athens, OH (United States). Dept of Physics and Astronomy
  6. Colorado State Univ., Fort Collins, CO (United States). Dept. of Electrical and Computer Engineering
  7. California Inst. of Technology (CalTech), Pasadena, CA (United States). LIGO Lab.
  8. American Univ., Washington, DC (United States). Dept. of Physics
  9. Univ. of Glasgow, Scotland (United Kingdom). School of Physics and Astronomy
  10. McGill Univ., Montreal, QC (Canada). Dept of Physics
  11. Hobart and William Smith Colleges, Geneva, NY (United States). Dept. of Physics
  12. SLAC National Accelerator Lab., Menlo Park, CA (United States)

Understanding the local atomic order in amorphous thin film coatings and how it relates to macroscopic performance factors, such as mechanical loss, provides an important path towards enabling the accelerated discovery and development of improved coatings. High precision x-ray scattering measurements of thin films of amorphous zirconia-doped tantala (ZrO2-Ta2O5) show systematic changes in intermediate range order (IRO) as a function of postdeposition heat treatment (annealing). Atomic modeling captures and explains these changes, and shows that the material has building blocks of metal-centered polyhedra and the effect of annealing is to alter the connections between the polyhedra. The observed changes in IRO are associated with a shift in the ratio of corner-sharing to edge-sharing polyhedra. These changes correlate with changes in mechanical loss upon annealing, and suggest that the mechanical loss can be reduced by developing a material with a designed ratio of corner-sharing to edge-sharing polyhedra.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
PHY-1707866; PHY-1708175; DMR-1506836; AC02-76SF00515; 6793
OSTI ID:
1560637
Alternate ID(s):
OSTI ID: 1545422
Journal Information:
Physical Review Letters, Vol. 123, Issue 4; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (4)

Investigation of effects of assisted ion bombardment on mechanical loss of sputtered tantala thin films for gravitational wave interferometers journal December 2019
Thermal noise from icy mirrors in gravitational wave detectors journal August 2019
Enhanced medium-range order in vapor-deposited germania glasses at elevated temperatures journal September 2021
Progress in the measurement and reduction of thermal noise in optical coatings for gravitational-wave detectors conference January 2019

Figures / Tables (3)


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