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Magnetic studies on several tetracya...

Taliaferro, Michelle Lynn.

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Magnetic studies on several tetracyanocarbon-based magnets.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Magnetic studies on several tetracyanocarbon-based magnets./
作者:	Taliaferro, Michelle Lynn.
面頁冊數:	112 p.
附註:	Adviser: Joel S. Miller.
Contained By:	Dissertation Abstracts International67-07B.
標題:	Chemistry, Inorganic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3224983
ISBN:	9780542794018

Magnetic studies on several tetracyanocarbon-based magnets.
Taliaferro, Michelle Lynn.

Magnetic studies on several tetracyanocarbon-based magnets. - 112 p.

Adviser: Joel S. Miller.

Thesis (Ph.D.)--The University of Utah, 2006.

Several tetracyanocarbon based magnets were synthesized and magnetically characterized. [FeCp*2] [TCNE] (Cp* = pentamethylcylcopentadienyl, TCNE = tetracyanoethylene), the first organic-based magnet, with a critical temperature, Tc = 4.8 K was further explored using AC susceptibility measurements looking at the effect various nitrile solvents had on Tc for [FeCp*2][TCNE]•S (S = MeCN, EtCN, PrCN, PhCN, NCC4H8CN and 1.2-C 6H4Cl2). Regardless of the solvent, the Tc decreased and a spin-glass like behavior was observed. The related [FeCp*2][TCNQ], (TCNQ = 7,7,8,8-tetracyano p-quinodimethane) has metamagnet (Tc = 2.6 K) and ferromagnet (Tc = 3.1 K) polymorphs. Each magnetic phase was magnetically characterized in detail using AC susceptibility (varying both temperature and field), heat capacity, and isothermal magnetization resulting in the construction of a magnetic phase diagram. The magnetic phase diagram contains a paramagnetic, an antiferromagnetic, and an intermediate phase. V(CO)6 was reacted with two equivalents of TCNB (TCNB = tetracyanobenzene) in CH2Cl2, which led to a new family of room temperature magnets with (Tc &sim; 325 K. These systems were magnetically characterized using zero field/field cooled, isothermal magnetization and AC susceptibility. The systems were physically characterized using infrared spectra, elemental analysis, thermogravimetric analysis and high resolution mass spectra.

ISBN: 9780542794018Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Magnetic studies on several tetracyanocarbon-based magnets.
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520 $a Several tetracyanocarbon based magnets were synthesized and magnetically characterized. [FeCp*2] [TCNE] (Cp* = pentamethylcylcopentadienyl, TCNE = tetracyanoethylene), the first organic-based magnet, with a critical temperature, Tc = 4.8 K was further explored using AC susceptibility measurements looking at the effect various nitrile solvents had on Tc for [FeCp*2][TCNE]•S (S = MeCN, EtCN, PrCN, PhCN, NCC4H8CN and 1.2-C 6H4Cl2). Regardless of the solvent, the Tc decreased and a spin-glass like behavior was observed. The related [FeCp*2][TCNQ], (TCNQ = 7,7,8,8-tetracyano p-quinodimethane) has metamagnet (Tc = 2.6 K) and ferromagnet (Tc = 3.1 K) polymorphs. Each magnetic phase was magnetically characterized in detail using AC susceptibility (varying both temperature and field), heat capacity, and isothermal magnetization resulting in the construction of a magnetic phase diagram. The magnetic phase diagram contains a paramagnetic, an antiferromagnetic, and an intermediate phase. V(CO)6 was reacted with two equivalents of TCNB (TCNB = tetracyanobenzene) in CH2Cl2, which led to a new family of room temperature magnets with (Tc &sim; 325 K. These systems were magnetically characterized using zero field/field cooled, isothermal magnetization and AC susceptibility. The systems were physically characterized using infrared spectra, elemental analysis, thermogravimetric analysis and high resolution mass spectra.
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