Journal Article

PUBDB-2025-03863

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Influence of diameter on high-pressure induced phase transitions in bismuth nanowire networks

Schroeck, C. (Corresponding author)Extern* ; Tzifas, I.Extern* ; Voss, K.-O.Extern* ; Wagner, M.Extern* ; Trautmann, C.Extern* ; Bayarjargal, L. ; Spahr, D.Extern* ; Winkler, B.Extern* ; Toimil-Molares, M. E. (Corresponding author)Extern*

2025
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/c4fw-p99m  doi:10.3204/PUBDB-2025-03863

Abstract: Size-dependent behavior of bismuth nanowire networks under high-pressure conditions was investigated at room temperature. Three-dimensional networks of freestanding interconnected bismuth nanowires with diameters between 34 and 85n⁢mwere synthesized by electrodeposition in ion-track etched membranes, along with microcrystals as bulk analogues. Both types of samples were simultaneously compressed in diamond anvil cells under hydrostatic conditions up to 19.5⁢G⁡Pa. Synchrotron x-ray diffraction data reveal a shift of the Bi-I/-II, Bi-II/-III, and Bi-III/-V phase transition to higher-pressure values for decreasing nanowire diameter. In case of the thinnest wires, compression and decompression cycles revealed hysteresislike behavior of the shifts and a pronounced coexistence of the Bi-III and Bi-V phases upon compression. All samples exhibited bulklike compression behavior, as reflected in the evolution of their lattice parameter and bulk modulus. Only nanowires in the Bi-III phase showed a slightly reduced modulus compared to the corresponding bulk value. The systematic size dependence highlights the importance of excellent control on the geometrical parameters of the nanowires and consistent experimental conditions. The mechanical stability of the three-dimensional nanowire networks allowed the pressurization of samples of varying wire diameters under identical experimental conditions and facilitates systematic studies of size effects in nanomaterials with diameters as small as 10n⁢m.

Note: gratefully acknowledge funding from the DFG (Projects No. WI1232, No. BA4020, and No. BY101/2-1).

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum für Schwerionenforschung (GSI)
3. Universität Frankfurt (UFrankf.)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20220591 (I-20220591) (I-20220591)
3. FS-Proposal: I-20231391 (I-20231391) (I-20231391)

Experiment(s):

1. PETRA Beamline P02.2 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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