NMR study of B-2p Fermi-level density of states in the transition metal diborides

Chin-Shan Lue, W. J. Lai

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We present a systematic study of the AlB2-type transition metal diborides by measuring the 11B NMR spin-lattice relaxation rate on TiB2, VB2, ZrB2, NbB2, HfB 2, as well as TaB2. For all studied materials, the observed relaxation at B nuclei is mainly due to the p-electrons. The comparison with theoretical calculations allows the experimental determination of the partial B-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB2, ZrB2, and HfB 2 are consistently smaller than in VB2, NbB2, and TaB2. We connect this trend to the rigid-band scenario raised by band structure calculations.

Original languageEnglish
Pages (from-to)1108-1112
Number of pages5
JournalPhysica Status Solidi (B) Basic Research
Volume242
Issue number5
DOIs
Publication statusPublished - 2005 Apr 1

Fingerprint

Fermi level
Transition metals
transition metals
Nuclear magnetic resonance
nuclear magnetic resonance
Spin-lattice relaxation
spin-lattice relaxation
Band structure
trends
nuclei
Electrons
electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "We present a systematic study of the AlB2-type transition metal diborides by measuring the 11B NMR spin-lattice relaxation rate on TiB2, VB2, ZrB2, NbB2, HfB 2, as well as TaB2. For all studied materials, the observed relaxation at B nuclei is mainly due to the p-electrons. The comparison with theoretical calculations allows the experimental determination of the partial B-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB2, ZrB2, and HfB 2 are consistently smaller than in VB2, NbB2, and TaB2. We connect this trend to the rigid-band scenario raised by band structure calculations.",
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NMR study of B-2p Fermi-level density of states in the transition metal diborides. / Lue, Chin-Shan; Lai, W. J.

In: Physica Status Solidi (B) Basic Research, Vol. 242, No. 5, 01.04.2005, p. 1108-1112.

Research output: Contribution to journalArticle

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