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Title: Effect of oxygen vacancies and strain on the phonon spectrum of HfO2 thin films

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4984833· OSTI ID:1535311
 [1]; ORCiD logo [2];  [3];  [2];  [3]; ORCiD logo [4];  [1]
  1. Univ. of Texas, Austin, TX (United States). Dept. of Physics
  2. Stanford Univ., Stanford, CA (United States). Dept. of Electrical Engineering
  3. Stanford Univ., Stanford, CA (United States). Dept. of Materials Science and Engineering
  4. Stanford Univ., Stanford, CA (United States). Dept. of Electrical Engineering; Stanford Univ., Stanford, CA (United States). Dept. of Materials Science and Engineering

The effect of strain and oxygen deficiency on the Raman spectrum of monoclinic HfO2 is investigated theoretically using first-principles calculations. 1% in-plane compressive strain applied to a and c axes is found to blue shift the phonon frequencies, while 1% tensile strain does the opposite. The simulations are compared, and good agreement is found with the experimental results of Raman frequencies greater than 110 cm-1 for 50 nm HfO2 thin films. Several Raman modes measured below 110 cm-1 and previously assigned to HfO2 are found to be rotational modes of gases present in air ambient (nitrogen and oxygen). However, localized vibrational modes introduced by threefold-coordinated oxygen (O3) vacancies are identified at 96.4 cm-1 computationally. Finally, these results are important for a deeper understanding of vibrational modes in HfO2, which has technological applications in transistors and particularly in resistive random-access memory whose operation relies on oxygen-deficient HfOx.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0008877
OSTI ID:
1535311
Alternate ID(s):
OSTI ID: 1361920
Journal Information:
Journal of Applied Physics, Vol. 121, Issue 22; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (57)

Hafnia and hafnia-toughened ceramics journal January 1992
Pressure-induced phase transitions and volume changes in HfO 2 up to 50 GPa journal July 1993
Atomic layer deposition rate, phase composition and performance of HfO2 films on noble metal and alkoxylated silicon substrates journal April 2005
Vacancy and interstitial defects in hafnia journal May 2002
A Thermodynamic Approach to Selecting Alternative Gate Dielectrics journal March 2002
Raman study of oxygen reduced and re-oxidized strontium titanate journal July 2007
Conditions for the existence of phonon localized edge-modes journal May 2010
Heat Capacities at Low Temperatures and Entropies at 298.16°K. of Hafnium Dioxide and Hafnium Tetrachloride journal June 1953
Uniaxial Strain on Graphene: Raman Spectroscopy Study and Band-Gap Opening journal October 2008
Nucleation and growth study of atomic layer deposited HfO2 gate dielectrics resulting in improved scaling and electron mobility journal January 2006
On the Use of a Fabry-Perot Etalon for the Determination of Rotational Constants of Simple Molecules-The Pure Rotational Raman Spectra of Oxygen and Nitrogen
  • Butcher, R. J.; Willetts, D. V.; Jones, W. J.
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 324, Issue 1557 https://doi.org/10.1098/rspa.1971.0137
journal August 1971
Defect energy levels in HfO2 high-dielectric-constant gate oxide journal October 2005
Influence of oxygen vacancies on the dielectric properties of hafnia: First-principles calculations journal March 2007
Structure and optical properties of HfO2 thin films on silicon after rapid thermal annealing journal January 2010
Raman and Brillouin scattering spectroscopy studies of atomic layer-deposited ZrO2 and HfO2 thin films journal August 2005
Dynamical response and instability in ceria under lattice expansion journal June 2013
Pressure-Induced Phase Transformation of HfO2 journal April 1992
Structural and vibrational properties of high-dielectric oxides, HfO2 and TiO2: A comparative study journal December 2006
Phase diagram up to 105 GPa and mechanical strength of HfO 2 journal October 2010
Theoretical modeling of antiferrodistortive phase transition for SrTi O 3 ultrathin films journal December 2013
Phonon instability and mechanism of superionic conduction in Li 2 O journal May 2012
HfO[sub 2] Gate Dielectrics Deposited via Tetrakis Diethylamido Hafnium journal January 2003
Phase transition in sputtered HfO2 thin films: A qualitative Raman study journal November 2012
Memristive devices for computing journal January 2013
Silicon Nanowire Polytypes: Identification by Raman Spectroscopy, Generation Mechanism, and Misfit Strain in Homostructures journal October 2011
X-Ray absorption, photoemission spectroscopy, and Raman scattering analysis of amorphous tantalum oxide with a large extent of oxygen nonstoichiometry journal January 2011
The conduction bands of MgO, MgS and journal November 1998
The simulated vibrational spectra of HfO 2 polymorphs journal February 2014
Determination of electron effective mass and electron affinity in HfO2 using MOS and MOSFET structures journal April 2009
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Optical characterization of HfO2 thin films grown by atomic layer deposition journal November 2004
Pressure and Temperature Dependence of the Raman Spectra of Zirconia and Hafnia journal March 1991
Evidences of oxygen-mediated resistive-switching mechanism in TiN\HfO2\Pt cells journal December 2010
Lithium oxide and superionic behaviour—A study using potentials from periodic ab initio calculations journal March 1998
Raman-scattering measurements and first-principles calculations of strain-induced phonon shifts in monolayer MoS 2 journal February 2013
Investigation of thermal annealing effects on microstructural and optical properties of HfO2 thin films journal October 2006
Annealing and doping effects on the structure of europium-doped HfO2 sol–gel material journal October 2003
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Enthalpy of formation of cubic yttria-stabilized hafnia journal June 2004
First-principles study of structural, vibrational, and lattice dielectric properties of hafnium oxide journal June 2002
Structural, electronic, optical, elastic properties and Born effective charges of monoclinic HfO 2 from first-principles calculations journal April 2014
Monoclinic to tetragonal transformations in hafnia and zirconia: A combined calorimetric and density functional study journal October 2009
Phase Relations and Volume Changes of Hafnia under High Pressure and High Temperature journal June 2001
Raman spectrometry study of phonon anharmonicity of hafnia at elevated temperatures journal August 2009
High-κ gate dielectrics: Current status and materials properties considerations journal May 2001
Energetics of rare-earth-doped hafnia journal April 2007
Raman Scattering Cross Sections in Gases and Liquids book January 1979
Effect of static uniaxial stress on the Raman spectrum of silicon journal January 1970
Oxygen vacancy in monoclinic HfO2: A consistent interpretation of trap assisted conduction, direct electron injection, and optical absorption experiments journal December 2006
High dielectric constant oxides journal December 2004
First-principles calculations of the ferroelastic transition between rutile-type and CaCl 2 -type SiO 2 at high pressures journal October 2008
X-ray diffraction study of Hafnia under high pressure using synchrotron radiation journal January 1991
Comparative Lattice-Dynamical Study of the Raman Spectra of Monoclinic and Tetragonal Phases of Zirconia and Hafnia journal July 2002
Effect of static uniaxial stress on the Raman spectrum of silicon journal December 1993
High-resolution X-ray luminescence extension imaging journal February 2021
Uniaxial Strain on Graphene: Raman Spectroscopy Study and Band-Gap Opening journal January 2009
First-principles study of structural, vibrational and lattice dielectric properties of hafnium oxide text January 2002

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