<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>47403</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1570</pageFirst>
    <pageLast>1576</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>19</volume>
    <type>article</type>
    <publisherName>ACS</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Unique Nanomechanical Properties of Diamond-Lonsdaleite Biphases: Combined Exp and Theor consideration of popigai impact diamonds</title>
    <abstract language="eng">For the first time, lonsdaleite-rich impact diamonds from one of the largest Popigai impact crater (Northern Siberia) with a high concentration of structural defects are investigated under hydrostatic compression up to 25 GPa. It is found that, depending on the nature of a sample, the bulk modulus for lonsdaleite experimentally obtained by X-ray diffraction in diamond-anvil cells is systematically lower and equal to 93.3−100.5% of the average values of the bulk moduli of a diamond matrix. Density functional theory calculations reveal possible coexistence of a number of diamond/lonsdaleite and twin diamond biphases. Among the different mutual configurations, separate inclusions of one lonsdaleite (001) plane per four diamond (111) demonstrate the lowest energy per carbon atom, suggesting a favorable formation of single-layer lonsdaleite (001) fragments inserted in the diamond matrix. Calculated formation energies and experimental diamond (311) and lonsdaleite (331) powder X-ray diffraction patterns indicate that all biphases could be formed &#13;
under high-temperature, high-pressure conditions. Following the equation of states, the bulk modulus of the diamond (111)/lonsdaleite (001) biphase is the largest one among all bulk moduli, including pristine diamond and lonsdaleite.</abstract>
    <parentTitle language="eng">Nano Letters</parentTitle>
    <identifier type="doi">10.1021/acs.nanolett.8b04421</identifier>
    <enrichment key="date_peer_review">04.04.2019</enrichment>
    <author>W. Baek</author>
    <author>S. Gromilov</author>
    <author>A. Kuklin</author>
    <author>E. Kovaleva</author>
    <author>A. Fedorov</author>
    <author>Alex Sukhikh</author>
    <author>M. Hanfland</author>
    <author>V. Pomogaev</author>
    <author>Y. Melchakova</author>
    <author>P. Avramov</author>
    <author>Kirill Yusenko</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Compressibility</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Lonsdaleite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Impact diamonds</value>
    </subject>
    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
