Fracture toughness from submicron derived indentation cracks

Scholz, T.; Schneider, G. A.; Muñoz-Saldaña, J.; Swain, M. V.
April 2004
Applied Physics Letters;4/19/2004, Vol. 84 Issue 16, p3055
Academic Journal
Indentation tests with loads between 0.5 and 10 mN were performed on fused quartz, (0001) oriented sapphire and (001) oriented barium titanate. The resulting submicron cracks were used to determine the fracture toughness KIC of the tested samples. The indentation crack length method was applicable, but a c/a dependency of the constant of proportionality was found. In addition, a very effective and simple approach—using the extra penetration of the indenter, due to the formation of cracks, so called pop-in—was used to determine KIC. © 2004 American Institute of Physics.


Related Articles

  • Epitaxial growth and properties of Zn1-xVxO diluted magnetic semiconductor thin films. Ramachandran, S.; Tiwari, A.; Narayan, J.; Prater, J. T. // Applied Physics Letters;10/24/2005, Vol. 87 Issue 17, p172502 

    Here we report systematic studies on the epitaxial growth and properties of Zn1-xVxO[x=0.001-0.2] thin films deposited onto sapphire c-plane single crystals. The thin films were deposited using pulsed laser deposition technique and were found to be epitaxial in nature. X-ray diffraction and high...

  • Atomic mapping of Ruddlesden-Popper faults in transparent conducting BaSnO3-based thin films. Wang, W. Y.; Tang, Y. L.; Zhu, Y. L.; Suriyaprakash, J.; Xu, Y. B.; Liu, Y.; Gao, B.; Cheong, S-W.; Ma, X. L. // Scientific Reports;11/6/2015, p16097 

    Doped BaSnO3 has arisen many interests recently as one of the promising transparent conducting oxides for future applications. Understanding the microstructural characteristics are crucial for the exploration of relevant devices. In this paper, we investigated the microstructural features of...

  • In situ transmission electron microscopy study of plastic deformation in passivated Al-Cu thin... Jawaranin, D.; Kawasaki, H. // Journal of Applied Physics;7/1/1997, Vol. 82 Issue 1, p171 

    Studies plastic deformation in passivated Al-1 wt %Cu thin films using a straining device in the transmission electron microscope. Microstructural studies of passivated and unpassivated thin films; Plastic deformation experiments involving in situ transmission electron microscope (TEM) straining.

  • Elimination of pinholes in epitaxial thin film.... Olsson, E.; Brorsson, G. // Applied Physics Letters;9/13/1993, Vol. 63 Issue 11, p1567 

    Examines the elimination of pinholes in epitaxial thin film multilayers. Introduction of SrTiO[sub 3] (STO) and PrGaO[sub 3] intermediate layers; Deposition of YBa[sub 2]Cu[sub 3]O[sub 7-x] films on the (001) STO substrate; Characterization of microstructures using several electron microscope...

  • Polycrystalline Ba0.6Sr0.4TiO3 thin films on r-plane sapphire: Effect of film thickness on strain and dielectric properties. Fardin, E. A.; Holland, A. S.; Ghorbani, K.; Akdogan, E. K.; Simon, W. K.; Safari, A.; Wang, J. Y. // Applied Physics Letters;10/30/2006, Vol. 89 Issue 18, p182907 

    Polycrystalline Ba0.6Sr0.4TiO3 (BST) films grown on r-plane sapphire exhibit strong variation of in-plane strain over the thickness range of 25–400 nm. At a critical thickness of ∼200 nm, the films are strain relieved; in thinner films, the strain is tensile, while compressive strain...

  • Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains. Okatan, M. B.; Cole, M. W.; Alpay, S. P. // Journal of Applied Physics;Nov2008, Vol. 104 Issue 10, p104107 

    A thermodynamic model was developed to analyze the effect of the difference in the thermal expansion coefficient (TEC) of a multilayered barium strontium titanate Ba1-ySryTiO3 (BST) ferroelectric heterostructure and a passive substrate on the dielectric properties by taking into account...

  • Investigation of the initial stages of the growth of barium strontium titanate ferroelectric films by medium-energy ion scattering. Tumarkin, A.; Serenkov, I.; Sakharov, V. // Physics of the Solid State;Dec2010, Vol. 52 Issue 12, p2561 

    The initial stages of the growth of barium strontium titanate (BaSrTiO) ferroelectric films deposited on single-crystal sapphire substrates have been studied using medium-energy ion scattering. It has been found that, depending on the variation in the deposition temperature, the mechanisms of...

  • Microwave characterization of tunable interdigitated capacitances on BaTiSnO3 thin films deposited by sol-gel. Waldhoff, Nicolas; Fasquelle, Didier; Blary, Karine // Applied Physics Letters;9/29/2014, Vol. 105 Issue 13, p1 

    A complete study of BaTi098Sn002O3 (BTS) thin films deposited on sapphire substrates by a solgel technique with physical and microwave dielectric properties up to 67 GHz is presented. A method derived from the techniques applied to silicon transistors and called de-embedding OPENSHORT is used...

  • Improvement of windowed type environmental-cell transmission electron microscope for in situ observation of gas-solid interactions. Kawasaki, Tadahiro; Ueda, Kouta; Ichihashi, Mikio; Tanji, Takayoshi // Review of Scientific Instruments;Nov2009, Vol. 80 Issue 11, p113701 

    We have developed an improved, windowed type environmental-cell (E-cell) transmission electron microscope (TEM) for in situ observation of gas-solid interactions, such as catalytic reactions at atmospheric pressure. Our E-cell TEM includes a compact E-cell specimen holder with mechanical...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics