Electron Spin Resonance of Mn 2 + in Eu 2 M ” 3 ( NO 3 ) 12 · 24 H 2 O ( M ” = Zn , Co ) Single Crystals

نویسنده

  • V. K. Jain
چکیده

Electron spin resonance of Mn2+ doped in Eu2M”3 (NO3)12.24H2 O (M” = Zn, Co) single crystals has been studied at 295 and 77 K using an X-band spectrometer. The observation of resolved Mn2+ spectra in Eu2Co3(NO3)12.24H2O at 295 K have been interpreted in terms of random modulation of interaction between Mn2+ and divalent cobalt ions by the rapid spin-lattice relaxation of cobalt ions. T1 of divalent cobalt has been estimated to be ∼ 5× 10−12 s at 295 K. The superposition model is applied to the zero-field splitting parameter D. — PACS: 76.30 F

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Heterometallic cubane single-molecule magnets.

Two new heterometallic cubane molecules have been synthesized. High-frequency electron paramagnetic resonance and magnetization measurements indicate that [Mn(3)Ni(hmp)(3)O(N(3))(3)(C(7)H(5)O(2))(3)] (1) displays a well-isolated S = 5 ground state (DeltaE > 120 K), with g = 2.0, D = -0.23 cm(-1), and ferromagnetic Mn-Mn exchange interactions competing with antiferromagnetic Ni-Mn interactions. ...

متن کامل

Host Spin - Lattice Relaxation Narrowing in Pr 2 Co 3 ( N 0 3 ) 1 2 • 24 H 2 0 : M n 2 \ Gd 3 + Single Crystals

Electron paramagnetic resonance of Mn2+ and Gd3+ in single crystals of Pr2Co3(N03)i2 • 24 H2O has been studied at X-band at 305 and 77 K. Mn2+ substitutes at two types of Co2 f sites whereas Gd3 substitutes at the single type of Pr3+ site in the lattice. The spin-Hamiltonian parameters have been evaluated. Observation of resolved Mn2+ and Gd3+ spectra at 305 K and their broadening on lowering t...

متن کامل

Nanomodulation of molecular nanomagnets.

Detailed synthetic, structural, and magnetic characterizations for a family of six [Mn(3)Zn(2)](13+) complexes are presented. These complexes have planar [Mn(3)(III)-(mu(3)-oxo)](7+) core magnetic units and have formulas represented by [cation](3)[Mn(3)Zn(2)(R-salox)(3)O(N(3))(6)X(2)], where [cation](+) = [NEt(4)](3)(+) or [AsPh(4)](3)(+); R = H or Me; and X = Cl(-), Br(-), I(-), or N(3)(-). Le...

متن کامل

Heterobimetallic peroxo-titanium(IV) nitrilotriacetate complexes as single source precursors for preparation of MTiO3 (M = Co, Ni and Zn).

Three isostructural heterobimetallic nitrilotriacetatoperoxotitanate complexes of general formula [M(H(2)O)(5)](2)[Ti(2)(O(2))(2)O(nta)(2)].7H(2)O [M = Co (1), Ni (2) and Zn (3)] have been isolated in pure crystals directly from the quaternary system of M(2+)-Ti(OC(4)H(9))(4)-H(2)O(2)-H(3)nta (H(3)nta = nitrilotriacetic acid) at pH = 4.0 and have been characterized by elemental analyses, IR, th...

متن کامل

Heterocyclic amine directed synthesis of metal(II)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2.

We report here two series of coordination polymer chains: the first being [M(II)(ox)(bnz)(2)](n) (M = Mn 1, Fe 2, Co 3, Ni 4, Cu 5 and Zn 6; ox = oxalate C(2)O(4)(2-); bnz = benzimidazole) and the second [M(II)(ox)(btz)(2)](n) (M = Mn 7, Fe 8, Co 9, Ni 10, Cu 11 and Zn 12; btz = benzotriazole). The first series displays an unusual homometallic [-M(i)-M(ii)-M(ii)-](n) chain topology and the seco...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003