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Ho:GDVO4
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99% Ho:GDVO4
HO-GDV-02-C
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99.9% Ho:GDVO4
HO-GDV-03-C
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99.99% Ho:GDVO4
HO-GDV-04-C
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99.999% Ho:GDVO4
HO-GDV-05-C
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Ho:GDVO4
is a crystalline solid used as a semiconductor and in photo optic applications. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Holmium is a Block F, Group 3, Period 6 element. The electronic configuration is [Xe]4f116s2. In its elemental form holmium's CAS number is 7440-60-0. The holmium atom has a radius of 174.3.pm and it's Van der Waals radius is unknown. Holmium has the highest magnetic moment (10.6µB) of any naturally occurring element. Because of this it has been used to create the highest known magnetic fields by placing it within high strength magnets as a pole piece or magnetic flux concentrator. This magnetic property also has value in yttrium-iron-garnet (YIG) lasers for microwave equipment. Holmium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Holmium lases at a human eye safe 2.08 microns allowing its use in a variety of medical and dental applications in both yttrium-aluminum-garnet (YAG) and yttrium-lanthanum-fluoride (YLF) solid state lasers. The wavelength allows for use in silica fibers designed for shorter wavelengths while still providing the cutting strength of longer wave length equipment.

Gadolinium is a Block F, Group 3, Period 6 element. The electronic configuration is [Xe]4f75d16s2. In its elemental form gadolinium's CAS number is 7440-54-2. The gadolinium atom has a radius of 178.7.pm and it's Van der Waals radius is unknown. Gadolinium is utilized for both its high magnetic moment (7.94µB) and in phosphors and scintillator material. When complexed with EDTA ligands, it is used as an injectable contrast agent for patients undergoing magnetic resonance imaging. Gadolinium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Gadolinium is a Block F, Group 3, Period 6 element. The electronic configuration is [Xe]4f75d16s2. In its elemental form gadolinium's CAS number is 7440-54-2. The gadolinium atom has a radius of 178.7.pm and it's Van der Waals radius is unknown. Gadolinium is utilized for both its high magnetic moment (7.94µB) and in phosphors and scintillator material. When complexed with EDTA ligands, it is used as an injectable contrast agent for patients undergoing magnetic resonance imaging. Gadolinium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. With its high magnetic moment, gadolinium can reduce relaxation times and thereby enhance signal intensity. The extra stable half-full 4f electron shell with no low lying energy levels creates applications as an inert phosphor host. Gadolinium can therefore act as hosts for x-ray cassettes and in scintillator materials for computer tomography.

Vanadium is a Block D, Group 5, Period 4 element. The electronic configuration is [Ar] 3d3 4s2. In its elemental form vanadium's CAS number is 7440-62-2. The vanadium atom has a radius of 131.1.pm and it's Van der Waals radius is 200.pm. Vanadium is highly resistant to corrosion, so it is commonly used to alloy stainless steel grades. Vanadium compounds are used in advanced ceramics. Vanadium is a petrochemical cracking catalyst. Vanadium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.

American Elements semi conducting materials are crystal structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Crystal Growth for processes used to fabricate semiconductor materials, which include:

  • Crystal "pulling" by the Czochaiski method for production of semiconductor materials
  • Flux growth and gradient freeze
  • Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
PRODUCT CATALOG Submicron & Nanopowder Tolling Ultra High Purity Sputtering Target Crystal Growth Rod, Plate, Powder, etc.
Periodic table of the elements science and academic information, elements and advanced materials data, scientific presentations and all pages, designs, concepts, logos, and color schemes herein are the copyrighted proprietary rights and intellectual property of American Elements. American Elements is a U.S. Registered Trademark. © 2001-2009. American Elements. All rights reserved.

Recent Research & Development for Holmium

  • Percutaneous endoscopic holmium laser lithotripsy for management of complicated biliary calculi. Healy K, Chamsuddin A, Spivey J, Martin L, Nieh P, Ogan K. JSLS. 2009 Apr-Jun;13(2):184-9. PMID: 19660213 [PubMed - in process]

  • Words of wisdom. Re: Holmium laser enucleation of the prostate: results at 6 years. Krambeck AE, Lingeman JE. Eur Urol. 2009 Mar;55(3):749. No abstract available. PMID: 19650210 [PubMed - in process]

  • High-power and highly efficient diode-cladding-pumped holmium-doped fluoride fiber laser operating at 2.94 mum. Jackson SD. Opt Lett. 2009 Aug 1;34(15):2327-9. PMID: 19649086 [PubMed - in process]

  • [Effect of extracorporeal shock-wave lithotripsy on residual stones after different methods of surgery.] Zhang L, Peng F, Yang L, Zhao X, Yang J, Zhang X. Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2009 Jul;34(7):634-7. Chinese. PMID: 19648676 [PubMed - in process]

  • Percutaneous nephrostolithotomy versus flexible ureteroscopy/holmium laser lithotripsy: cost and outcome analysis. Hyams ES, Shah O. J Urol. 2009 Sep;182(3):1012-7. Epub 2009 Jul 18. PMID: 19616804 [PubMed - in process]

  • The relationship between the reproducibility of holmium laser enucleation of the prostate and prostate size over the learning curve. Haraguchi T, Takenaka A, Yamazaki T, Nakano Y, Miyake H, Tanaka K, Kuwayama M, Takechi Y, Fujisawa M. Prostate Cancer Prostatic Dis. 2009 Jul 7. [Epub ahead of print] PMID: 19581921 [PubMed - as supplied by publisher]

  • [Administration of radioactive holmium-166 microsphere in domestic animals with inoperable tumors] Van de Bovenkamp CG, Meij BP, Stassen QE, Nijsen JF, Kirpensteijn J. Tijdschr Diergeneeskd. 2009 Jun 15;134(12):532-3. Dutch. No abstract available. PMID: 19579383 [PubMed - indexed for MEDLINE]

  • Safety of holmium laser enucleation of the prostate in anticoagulated patients. Tyson MD, Lerner LB. J Endourol. 2009 Aug;23(8):1343-6. PMID: 19575692 [PubMed - in process]

  • Holmium:YAG Laser Lithotripsy for Urolithiasis in Horses. Grant DC, Westropp JL, Shiraki R, Ruby AL. J Vet Intern Med. 2009 Jul 1. [Epub ahead of print] PMID: 19572912 [PubMed - as supplied by publisher]

  • Comparison of TURP, TUVRP, and HoLEP. Gupta NP, Anand A. Curr Urol Rep. 2009 Jul;10(4):276-8. PMID: 19570488 [PubMed - in process]

  • Management of chronic unilateral hematuria by ureterorenoscopy. Brito AH, Mazzucchi E, Vicentini FC, Danilovic A, Chedid Neto EA, Srougi M. J Endourol. 2009 Aug;23(8):1273-6. PMID: 19566410 [PubMed - in process]

  • [Treatment of ureteral obstruction by holmium: YAG laser endoureterotomy: a report of 18 cases] Fu YM, Ni SB, Chen QY, Zhao ZS, Ren MH, Ma L, Jiao ZX. Zhonghua Yi Xue Za Zhi. 2009 Feb 10;89(5):335-7. Chinese. PMID: 19563713 [PubMed - in process]

  • The use of holmium laser technology for the treatment of refractory common bile duct stones, with a short review of the relevant literature. Day A, Sayegh ME, Kastner C, Liston T. Surg Innov. 2009 Jun;16(2):169-72. PMID: 19546123 [PubMed - in process]

  • Microsphere radioembolization of liver malignancies: current developments. Bult W, Vente MA, Zonnenberg BA, Van Het Schip AD, Nijsen JF. Q J Nucl Med Mol Imaging. 2009 Sep;53(3):325-35. PMID: 19521312 [PubMed - in process]

  • Percutaneous treatment of staghorn stones: a retrospective case-control study with evaluation of single vs multiple access to the kidney. Barnaba D, Grossi FS, Raguso M, Larocca L, Sallustio G, Di Lena S, Raguso G. Arch Ital Urol Androl. 2009 Mar;81(1):40-2. PMID: 19499757 [PubMed - indexed for MEDLINE]

  • An Unusual Complication of a Hem-o-Lok Clip((R)) Following Laparoscopic Radical Prostatectomy. Tunnard GJ, Biyani CS. J Laparoendosc Adv Surg Tech A. 2009 Jun 2. [Epub ahead of print] PMID: 19489676 [PubMed - as supplied by publisher]

  • Lasers in percutaneous renal procedures. Cinman NM, Andonian S, Smith AD. World J Urol. 2009 Jun 2. [Epub ahead of print] PMID: 19488759 [PubMed - as supplied by publisher]

  • Use of Kuntz laser carrier and Sachse urethrotome sheath in percutaneous nephrolithotomy: a point of technique. Bapat S, Yadav P, Padhye A, Bhave A, Mahajan P. J Endourol. 2009 Jun;23(6):917-20. PMID: 19473065 [PubMed - in process]

  • [Comparison of holmium and thulium laser in transurethral enucleation of the prostate] Shao Q, Zhang FB, Shang DH, Tian Y. Zhonghua Nan Ke Xue. 2009 Apr;15(4):346-9. Chinese. PMID: 19472910 [PubMed - indexed for MEDLINE]

  • Combined electrohydraulic and holmium: YAG laser ureteroscopic nephrolithotripsy of large (>2 cm) renal calculi. Mariani AJ. Indian J Urol. 2008 Oct;24(4):521-5. PMID: 19468511 [PubMed - in process] Related Articles Free article in PMC | at journal site

 

 

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