American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopeia/British Pharmacopeia) and follows applicable ASTM testing standards.See safety data and research below and pricing/lead time above. American Elements specializes in producing high purity Hafnium Iron Sputtering targets with the highest possible density and smallest possible average grain sizes for use in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications. Our standard Sputtering Targets for thin film are available monoblock or bonded with dimensions and configurations up to 820 mm with hole drill locations and threading, beveling, grooves and backing designed to work with both older sputtering devises as well as the latest process equipment, such as large area coating for solar energy or fuel cells and flip-chip applications. Research sized targets are also produced as well as custom sizes and alloys. All targets are analyzed using best demonstrated techniques including X-Ray Fluorescence (XRF), Glow Discharge Mass Spectrometry (GDMS), and Inductively Coupled Plasma (ICP). "Sputtering" allows for thin film deposition of an ultra high purity sputtering metallic or oxide material onto another solid substrate by the controlled removal and conversion of the target material into a directed gaseous/plasma phase through ionic bombardment. We can also provide targets outside this range in addition to just about any size rectangular, annular, or oval target. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and in the form of solutions and organometallics.
Hafnium is a Block D, Group 4, Period 6 element. The number of electrons in each of Hafnium's shells is 2, 8, 18, 32, 10, 2 and its electronic configuration is [Xe] 4f14 5d2 6s2. In its elemental form hafnium's CAS number is 7440-58-6.The hafnium atom has a radius of 156.4.pm and it's Van der Waals radius is 200.pm. Hafnium is not toxic. Hafnium is one of the Group IV transition elements that is refined from various zirconic mineral deposits. Hafnium 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. It's primary uses are due to its ability as a nuclear "getter" or absorber of neutrons. It is a primary component in nuclear control rods for this purpose. It also finds uses as a dopant in the alloy of steel and titanium. It is also used in the production of mantles for high intensity incandescent lamps. Hafnium is replacing polysilicon as the principle gate or electrode material in metaloxide semiconductor field effect transistors (MOSFETs) which are the basis for all modern semiconductors. As semiconductors have gotten smaller, the limiting factor in further size reduction has been the ability of the silicon oxide gate to perform below 10 angstroms where leakage occurs. Recent research has been devoted to the development of High-k materials which can function as a di-electric barrier or gate with lower leakage. Using hafnium based alloys as this di-electric gate has allowed for the development of MOSFET gates smaller than 10 angstroms. This allows for further size reduction, reduced switching power requirements and improved performance. Hafnium was first discovered by Dirk Coster in 1923. See Hafnium research below.
Iron is a Block D, Group 8, Period 4 element. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electronic configuration is [Ar] 3d6 4s2. In its elemental form iron's CAS number is 7439-89-6. The iron atom has a radius of 124.1.pm and it's Van der Waals radius is 200.pm. Iron is not toxic. Iron is the most commonly used metal for commercial applications due to its hardness, historical availability and low cost. Once used on its own, it is now alloyed with nickel and other elements to produce steel and other high strength, non-corrosive structural metals. Iron as a metal and as its many compounds has numerous uses. It is a primary colorant in glass and ceramics. It is a catalyst. It is the basis for low grade magnets and because of its magnetic properties is used extensively in memory tape. Recent applications for Iron nanoparticles include in water treatment of carbon tetrachloride in contaminated groundwater, magnetic data storage and resonance imaging (MRI) and in certain alloy and catalyst applications. Iron can also be introduced into processes using iron foil, pellets, rod and wire by thin film Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Organometallic and Chemical Vapor Deposition (MOCVD) for specific applications such as fuel cells and solar energy. Iron 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. Iron was first discovered by Early Man.See Iron research below.
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Fluorescence Signaling of Zr(4+) by Hydrogen Peroxide Assisted Selective Desulfurization of Thioamide.
Hwang J, Choi MG, Eor S, Chang SK.
Inorg Chem. 2012 Jan 19. [Epub ahead of print]
PMID:
22260347
[PubMed - as supplied by publisher]
Hafnium metallocene compounds used as cathode interfacial layers for enhanced electron transfer in organic solar cells.
Park K, Oh S, Jung D, Chae H, Kim H, Boo JH.
Nanoscale Res Lett. 2012 Jan 9;7(1):74. [Epub ahead of print]
PMID:
22230259
[PubMed - as supplied by publisher]
Synthesis of hafnium oxide-gold core-shell nanoparticles.
Dahal N, Chikan V.
Inorg Chem. 2012 Jan 2;51(1):518-22. Epub 2011 Dec 16.
PMID:
22221284
[PubMed - in process]
Di-?-hydroxido-bis-[tris-(4,4,4-trifluoro-1-phenyl-acetyl-acetonato-?O,O')hafnium(IV)] dimethyl-formamide disolvate.
Viljoen JA, Visser HG, Roodt A.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1822-3. Epub 2011 Nov 25.
PMID:
22199601
[PubMed - in process]
Potential of high-Z contrast agents in clinical contrast-enhanced computed tomography.
Nowak T, Hupfer M, Brauweiler R, Eisa F, Kalender WA.
Med Phys. 2011 Dec;38(12):6469.
PMID:
22149830
[PubMed - in process]
Ni ion release, osteoblast-material interactions, and hemocompatibility of hafnium-implanted NiTi alloy.
Zhao T, Li Y, Zhao X, Chen H, Zhang T.
J Biomed Mater Res B Appl Biomater. 2011 Nov 28. doi: 10.1002/jbm.b.31989. [Epub ahead of print]
PMID:
22121018
[PubMed - as supplied by publisher]
Electrochemical oxide nanotube formation on the Ti-35Ta-xHf alloys for dental materials.
Moon BH, Jeong YH, Choe HC.
J Nanosci Nanotechnol. 2011 Aug;11(8):7428-32.
PMID:
22103212
[PubMed - indexed for MEDLINE]
Environmentally stable flexible metal-insulator-metal capacitors using zirconium-silicate and hafnium-silicate thin film composite materials as gate dielectrics.
Meena JS, Chu MC, Wu CS, Ravipati S, Ko FH.
J Nanosci Nanotechnol. 2011 Aug;11(8):6858-67.
PMID:
22103091
[PubMed]
In situ gas phase measurements during metal alkylamide atomic layer deposition.
Maslar JE, Kimes WA, Sperling BA.
J Nanosci Nanotechnol. 2011 Sep;11(9):8226-32.
PMID:
22097559
[PubMed]
Tetra-kis(5,7-dimethyl-quinolin-8-olato-?N,O)hafnium(IV) dimethyl-formamide disolvate.
Viljoen JA, Visser HG, Roodt A.
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):m1428-9. Epub 2011 Sep 30.
PMID:
22058710
[PubMed]
Synthesis, characterization, and materials chemistry of Group 4 silylimides.
Cosham SD, Johnson AL, Molloy KC, Kingsley AJ.
Inorg Chem. 2011 Dec 5;50(23):12053-63. Epub 2011 Nov 4.
PMID:
22053704
[PubMed - in process]
Preparation and physical properties of early-late heterobimetallic compounds featuring Ir-M bonds (M = Ti, Zr, Hf).
Curley JJ, Bergman RG, Tilley TD.
Dalton Trans. 2012 Jan 7;41(1):192-200. Epub 2011 Oct 21.
PMID:
22020701
[PubMed - in process]
New stable aryl-substituted acyclic imino-N-heterocyclic carbene: synthesis, characterisation and coordination to early transition metals.
Larocque TG, Badaj AC, Dastgir S, Lavoie GG.
Dalton Trans. 2011 Dec 21;40(47):12705-12. Epub 2011 Oct 18.
PMID:
22006062
[PubMed - in process]
Sterically demanding hetero-substituted [2]borametallocenophanes of group IV metals: synthesis, structure and reactivity.
Braunschweig H, Dörfler R, Mies J, Oechsner A.
Chemistry. 2011 Oct 17;17(43):12101-7. doi: 10.1002/chem.201101774. Epub 2011 Sep 9.
PMID:
21905138
[PubMed]
The role of electron localization in the atomic structure of transition-metal 13-atom clusters: the example of Co13, Rh13, and Hf13.
Piotrowski MJ, Piquini P, Cândido L, Da Silva JL.
Phys Chem Chem Phys. 2011 Oct 14;13(38):17242-8. Epub 2011 Aug 30.
PMID:
21879054
[PubMed - indexed for MEDLINE]
Monte Carlo dose enhancement studies in microbeam radiation therapy.
Martínez-Rovira I, Prezadoa Y.
Med Phys. 2011 Jul;38(7):4430-9.
PMID:
21859044
[PubMed - indexed for MEDLINE]
Electronic structure characterization of La incorporated Hf-based high-k gate dielectrics by NEXAFS.
Yamamoto T, Ogawa S, Kunisu M, Tsuji J, Kita K, Saeki M, Oku Y, Arimura H, Kitano N, Hosoi T, Shimura T, Watanabe H.
J Nanosci Nanotechnol. 2011 Apr;11(4):2823-8.
PMID:
21776638
[PubMed - indexed for MEDLINE]
Oxygen-containing gas-phase diatomic trications and tetracations: ReO(z+), NbO(z+) and HfO(z+) (z=3, 4).
Brites V, Franzreb K, Harvey JN, Sayres SG, Ross MW, Blumling DE, Castleman AW Jr, Hochlaf M.
Phys Chem Chem Phys. 2011 Sep 7;13(33):15233-43. Epub 2011 Jul 15.
PMID:
21761073
[PubMed]
Tris(?-cyclo-penta-dien-yl)hafnium(III).
Burlakov VV, Arndt P, Spannenberg A, Rosenthal U.
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):m629. Epub 2011 Apr 22.
PMID:
21754338
[PubMed]
Synthesis of freestanding HfO2 nanostructures.
Kidd T, O'Shea A, Boyle K, Wallace J, Strauss L.
Nanoscale Res Lett. 2011 Apr 5;6(1):294.
PMID:
21711786
[PubMed - in process]
Cytochrome b mutation Y268S conferring the atovaquone resistance phenotype in the malaria parasite results in reduced parasite bc1 catalytic turnover and protein expression.
Fisher N, Abd Majid R, Antoine T, Al-Helal M, Warman AJ, Johnson DJ, Lawrenson AS, Ranson H, O'Neill PM, Ward SA, Biagini GA.
J Biol Chem. 2012 Jan 26. [Epub ahead of print]
PMID:
22282497
[PubMed - as supplied by publisher]
Serum ferritin levels and endocrinopathy in medically treated patients with ß thalassemia major.
Belhoul KM, Bakir ML, Saned MS, Kadhim AM, Musallam KM, Taher AT.
Ann Hematol. 2012 Jan 28. [Epub ahead of print]
PMID:
22281991
[PubMed - as supplied by publisher]
Iron supplementation to treat anemia in patients with chronic kidney disease.
Besarab A, Coyne DW.
Nat Rev Nephrol. 2012 Jan 27;8(2):63. doi: 10.1038/nrneph.2011.217. No abstract available.
PMID:
22281971
[PubMed - in process]
Anemia in Critical Illness: Insights into Etiology, Consequences and Management.
Hayden SJ, Albert TJ, Watkins TR, Swenson ER.
Am J Respir Crit Care Med. 2012 Jan 26. [Epub ahead of print]
PMID:
22281832
[PubMed - as supplied by publisher]
IRON fMRI measurements of CBV and implications for BOLD signal.
Mandeville JB.
Neuroimage. 2012 Jan 16. [Epub ahead of print]
PMID:
22281669
[PubMed - as supplied by publisher]
Fatal idiopathic pulmonary haemosiderosis in association with pregnancy - Medico-legal evaluation.
Töro K, Herjavecz I, Vereckei E, Kovács M.
J Forensic Leg Med. 2012 Feb;19(2):101-104. Epub 2011 Oct 24.
PMID:
22281220
[PubMed - as supplied by publisher]
Reduction of Fe(III)EDTA(-) in a NO(x) scrubbing solution by magnetic Fe(3)O(4)-chitosan microspheres immobilized mixed culture of iron-reducing bacteria.
Jing G, Zhou J, Zhou Z, Lin T.
Bioresour Technol. 2011 Dec 27. [Epub ahead of print]
PMID:
22281145
[PubMed - as supplied by publisher]
Reactive oxygen species are involved in ferroportin degradation induced by ceruloplasmin mutant Arg701Trp.
Persichini T, Francesco GD, Capone C, Cutone A, Bonaccorsi di Patti MC, Colasanti M, Musci G.
Neurochem Int. 2012 Jan 20. [Epub ahead of print]
PMID:
22281056
[PubMed - as supplied by publisher]
Effects of hypoxic preconditioning on the expression of iron influx and efflux proteins in primary neuron culture.
Du F, Fan M, Gong Q, Zhu LL, Zhu ZJ, Lu L, Ke Y.
Neurochem Int. 2012 Jan 18. [Epub ahead of print]
PMID:
22281055
[PubMed - as supplied by publisher]
Iron deposition of the deep grey matter in patients with multiple sclerosis and neuromyelitis optica: A control quantitative study by 3D-enhanced susceptibility-weighted angiography (ESWAN).
Chen X, Zeng C, Luo T, Ouyang Y, Lv F, Rumzan R, Wang Z, Li Q, Wang J, Hou H, Huang F, Li Y.
Eur J Radiol. 2012 Jan 24. [Epub ahead of print]
PMID:
22280874
[PubMed - as supplied by publisher]
Iron golf club with improved mass properties and vibration damping.
Roach RL.
J Acoust Soc Am. 2012 Jan;131(1):643. No abstract available.
PMID:
22280652
[PubMed - in process]
Stability analysis of ultrasound thick-shell contrast agents.
Lu X, Chahine GL, Hsiao CT.
J Acoust Soc Am. 2012 Jan;131(1):24.
PMID:
22280568
[PubMed - in process]
Role of Ureaplasma urealyticum in altering the endothelial metal concentration during preeclampsia.
Padmini E, Uthra V.
Placenta. 2012 Jan 24. [Epub ahead of print]
PMID:
22280558
[PubMed - as supplied by publisher]
A polar corundum oxide displaying weak ferromagnetism at room temperature.
Li MR, Adem U, McMitchell SR, Xu Z, Thomas CI, Warren JE, Giap DV, Niu HJ, Wan X, Palgrave RG, Schiffmann F, Cora F, Slater B, Burnett TL, Cain MG, Abakumov AM, Van Tendeloo G, Thomas MF, Rosseinsky MJ, Claridge JB.
J Am Chem Soc. 2012 Jan 23. [Epub ahead of print]
PMID:
22280499
[PubMed - as supplied by publisher]
Targeting Vascular Changes in Lesions in Multiple Sclerosis and Experimental Autoimmune Encephalomyelitis.
Karlik SJ, Roscoe WA, Patinote C, Contino-Pépin C.
Cent Nerv Syst Agents Med Chem. 2012 Jan 25. [Epub ahead of print]
PMID:
22280405
[PubMed - as supplied by publisher]
[Transformation of copper and chromium in co-contaminated soil and its influence on bioavailability for pakchoi (Brassica chinensis)].
Wang D, Wei W, Liang DL, Wang SS, Hu B.
Huan Jing Ke Xue. 2011 Oct;32(10):3113-20. Chinese.
PMID:
22279932
[PubMed - in process]
[Distribution characteristic and assessment of soil heavy metal pollution in the iron mining of Baotou in Inner Mongolia].
Guo W, Zhao RX, Zhang J, Bao YY, Wang H, Yang M, Sun XL, Jin F.
Huan Jing Ke Xue. 2011 Oct;32(10):3099-105. Chinese.
PMID:
22279930
[PubMed - in process]
[Study of inactivating sulfate reducing bacteria with zero-valent iron nanoparticles].
Shu ZY, Wang J, Huang Y.
Huan Jing Ke Xue. 2011 Oct;32(10):3040-4. Chinese.
PMID:
22279921
[PubMed - in process]
[Combination of intersticial cystitis and adenomyosis in females suffering from chronic pelvic pain syndrome].
[No authors listed]
Urologiia. 2011 Sep-Oct;(5):10, 12-4. Russian.
PMID:
22279779
[PubMed - in process]
[Antidiabetes drug metformin is a donor of nitric oxide: ESR measurement of efficiency].
[No authors listed]
Biofizika. 2011 Nov-Dec;56(6):1125-33. Russian.
PMID:
22279758
[PubMed - in process]
Proud sponsors of Aeromat 2012. Please join us and our customers & co-sponsors Boeing and ATI on
June 18-20, 2012
in Charlotte, North Carolina
and smallest possible average grain sizes for use in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications. Our standard Sputtering Targets for thin film are available monoblock or bonded with dimensions and configurations up to 820 mm with hole drill locations and threading, beveling, grooves and backing designed to work with both older sputtering devises as well as the latest process equipment, such as large area coating for solar energy or fuel cells and flip-chip applications. Research sized targets are also produced as well as custom sizes and alloys. All targets are analyzed using best demonstrated techniques including X-Ray Fluorescence (XRF), Glow Discharge Mass Spectrometry (GDMS), and Inductively Coupled Plasma (ICP). "Sputtering" allows for thin film deposition of an ultra high purity sputtering metallic or oxide material onto another solid substrate by the controlled removal and conversion of the target material into a directed gaseous/plasma phase through ionic bombardment. We can also provide targets outside this range in addition to just about any size rectangular, annular, or oval target. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and in the form of solutions and organometallics.
Hafnium is a Block D, Group 4, Period 6 element. The number of electrons in each of Hafnium's shells is 2, 8, 18, 32, 10, 2 and its electronic configuration is [Xe] 4f14 5d2 6s2. In its elemental form hafnium's CAS number is 7440-58-6.The hafnium atom has a radius of 156.4.pm and it's Van der Waals radius is 200.pm. Hafnium is not toxic. Hafnium is one of the Group IV transition elements that is refined from various zirconic mineral deposits. Hafnium 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. It's primary uses are due to its ability as a nuclear "getter" or absorber of neutrons. It is a primary component in nuclear control rods for this purpose. It also finds uses as a dopant in the alloy of 
steel and 
titanium. It is also used in the production of mantles for high intensity incandescent lamps. Hafnium is replacing polysilicon as the principle gate or electrode material in metal oxide semiconductor field effect transistors (MOSFETs) which are the basis for all modern semiconductors. As semiconductors have gotten smaller, the limiting factor in further size reduction has been the ability of the silicon oxide gate to perform below 10 angstroms where leakage occurs. Recent research has been devoted to the development of High-k materials which can function as a di-electric barrier or gate with lower leakage. Using hafnium based alloys as this di-electric gate has allowed for the development of MOSFET gates smaller than 10 angstroms. This allows for further size reduction, reduced switching power requirements and improved performance. Hafnium was first discovered by Dirk Coster in 1923. See Hafnium research below.
Iron is a Block D, Group 8, Period 4 element. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electronic configuration is [Ar] 3d6 4s2. In its elemental form iron's CAS number is 7439-89-6. The iron atom has a radius of 124.1.pm and it's Van der Waals radius is 200.pm. Iron is not toxic. Iron is the most commonly used metal for commercial applications due to its hardness, historical availability and low cost. Once used on its own, it is now alloyed with nickel and other elements to produce steel and other high strength, non-corrosive structural metals. Iron as a metal and as its 
many compounds has numerous uses. It is a primary colorant in glass and ceramics. It is a catalyst. It is the basis for low grade magnets and because of its magnetic properties is used extensively in memory tape. Recent applications for Iron nanoparticles include
in water treatment of carbon tetrachloride in contaminated groundwater, magnetic data storage and resonance imaging (MRI) and in certain alloy and catalyst applications. Iron can also be introduced into processes using iron foil, pellets, rod and wire by thin film Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Organometallic and Chemical Vapor Deposition (MOCVD) for specific applications such as fuel cells and solar energy. Iron 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. Iron was first discovered by Early Man.See Iron research below. 
