Magnetic alignment in nominally non-magnetic hexagonal metal hydrides: NMR

Vikram D. Kodibagkar; Caleb D. Browning; Xiaoping Tang; Yue Wu; Robert C. Bowman; Mark S. Conradi

doi:10.1016/j.ssnmr.2003.08.003

Magnetic alignment in nominally non-magnetic hexagonal metal hydrides: NMR

Vikram D. Kodibagkar, Caleb D. Browning, Xiaoping Tang, Yue Wu, Robert C. Bowman, Mark S. Conradi

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Powders of three hexagonal metal-hydrides or -deuterides are found to align in 4.4-8.3 T magnetic fields used for NMR. The field-alignment is unexpected, since all three systems have very small susceptibilities, as demonstrated by sharp NMR lines. The extent of alignment runs from nearly complete to barely detectable in ZrBe₂(H,D)_x, LuD ₃, and YD₃, respectively. The preferred alignment direction in ZrBe₂(H,D)_x is with the crystallites' c-axis perpendicular to B, while the c-axis and B tend to be parallel in LuD ₃ and YD₃. The susceptibilities χ_|| and χ_⊥ are determined from bulk magnetization measurements in aligned ZrBe₂H_1.4 powder. The alignment must be considered for proper analysis of NMR spectra in these and related materials.

Original language	English (US)
Pages (from-to)	254-262
Number of pages	9
Journal	Solid State Nuclear Magnetic Resonance
Volume	24
Issue number	4
DOIs	https://doi.org/10.1016/j.ssnmr.2003.08.003
State	Published - Dec 2003
Externally published	Yes

Keywords

Magnetic alignment
Metal-hydrides
Orientation
Powder lineshapes
Preferred orientation
Texture

ASJC Scopus subject areas

Radiation
General Chemistry
Nuclear and High Energy Physics
Instrumentation

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10.1016/j.ssnmr.2003.08.003

Cite this

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title = "Magnetic alignment in nominally non-magnetic hexagonal metal hydrides: NMR",

abstract = "Powders of three hexagonal metal-hydrides or -deuterides are found to align in 4.4-8.3 T magnetic fields used for NMR. The field-alignment is unexpected, since all three systems have very small susceptibilities, as demonstrated by sharp NMR lines. The extent of alignment runs from nearly complete to barely detectable in ZrBe2(H,D)x, LuD 3, and YD3, respectively. The preferred alignment direction in ZrBe2(H,D)x is with the crystallites' c-axis perpendicular to B, while the c-axis and B tend to be parallel in LuD 3 and YD3. The susceptibilities χ|| and χ⊥ are determined from bulk magnetization measurements in aligned ZrBe2H1.4 powder. The alignment must be considered for proper analysis of NMR spectra in these and related materials.",

keywords = "Magnetic alignment, Metal-hydrides, Orientation, Powder lineshapes, Preferred orientation, Texture",

author = "Kodibagkar, {Vikram D.} and Browning, {Caleb D.} and Xiaoping Tang and Yue Wu and Bowman, {Robert C.} and Conradi, {Mark S.}",

note = "Funding Information: The ZrBe 2 (H,D) x samples were generously provided by A.J. Maeland. The LuD 3 and YD 3 materials were prepared and graciously made available to us by T.J. Udovic of NIST. Helpful conversations with P.A. Fedders are acknowledged. We appreciate the assistance of P.L. Kuhns and B. Brandt in orienting a LuD 3 sample at the NHMFL, Tallahassee. P.C. Gibbons is acknowledged for his expertise and skill with electron diffraction in the TEM. Support from NSF grant DMR-9987888 is gratefully acknowledged. The research was partially supported by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautical and Space Administration.",

year = "2003",

month = dec,

doi = "10.1016/j.ssnmr.2003.08.003",

language = "English (US)",

volume = "24",

pages = "254--262",

journal = "Solid State Nuclear Magnetic Resonance",

issn = "0926-2040",

publisher = "Elsevier",

number = "4",

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TY - JOUR

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T2 - NMR

AU - Kodibagkar, Vikram D.

AU - Browning, Caleb D.

AU - Tang, Xiaoping

AU - Wu, Yue

AU - Bowman, Robert C.

AU - Conradi, Mark S.

N1 - Funding Information: The ZrBe 2 (H,D) x samples were generously provided by A.J. Maeland. The LuD 3 and YD 3 materials were prepared and graciously made available to us by T.J. Udovic of NIST. Helpful conversations with P.A. Fedders are acknowledged. We appreciate the assistance of P.L. Kuhns and B. Brandt in orienting a LuD 3 sample at the NHMFL, Tallahassee. P.C. Gibbons is acknowledged for his expertise and skill with electron diffraction in the TEM. Support from NSF grant DMR-9987888 is gratefully acknowledged. The research was partially supported by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautical and Space Administration.

PY - 2003/12

Y1 - 2003/12

N2 - Powders of three hexagonal metal-hydrides or -deuterides are found to align in 4.4-8.3 T magnetic fields used for NMR. The field-alignment is unexpected, since all three systems have very small susceptibilities, as demonstrated by sharp NMR lines. The extent of alignment runs from nearly complete to barely detectable in ZrBe2(H,D)x, LuD 3, and YD3, respectively. The preferred alignment direction in ZrBe2(H,D)x is with the crystallites' c-axis perpendicular to B, while the c-axis and B tend to be parallel in LuD 3 and YD3. The susceptibilities χ|| and χ⊥ are determined from bulk magnetization measurements in aligned ZrBe2H1.4 powder. The alignment must be considered for proper analysis of NMR spectra in these and related materials.

AB - Powders of three hexagonal metal-hydrides or -deuterides are found to align in 4.4-8.3 T magnetic fields used for NMR. The field-alignment is unexpected, since all three systems have very small susceptibilities, as demonstrated by sharp NMR lines. The extent of alignment runs from nearly complete to barely detectable in ZrBe2(H,D)x, LuD 3, and YD3, respectively. The preferred alignment direction in ZrBe2(H,D)x is with the crystallites' c-axis perpendicular to B, while the c-axis and B tend to be parallel in LuD 3 and YD3. The susceptibilities χ|| and χ⊥ are determined from bulk magnetization measurements in aligned ZrBe2H1.4 powder. The alignment must be considered for proper analysis of NMR spectra in these and related materials.

KW - Magnetic alignment

KW - Metal-hydrides

KW - Orientation

KW - Powder lineshapes

KW - Preferred orientation

KW - Texture

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Magnetic alignment in nominally non-magnetic hexagonal metal hydrides: NMR

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