Low temperature radio-frequency transverse susceptibility measurements using a CMOS oscillator circuit
Identifieur interne : 000156 ( Pascal/Corpus ); précédent : 000155; suivant : 000157Low temperature radio-frequency transverse susceptibility measurements using a CMOS oscillator circuit
Auteurs : A. I. Figueroa ; J. Bartolome ; J. M. García Del Pozo ; A. Arauzo ; E. Guerrero ; P. Tellez ; F. Bartolome ; L. M. GariaSource :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A transverse susceptibility (TS) measurement system based on a simple inverter CMOS cell oscillator cross-coupled to a LC tank is presented. The system has been implemented to operate at a Quantum Design Physical Properties Measurement System (PPMS). We introduce several improvements with respect to similar currently operating TS measurement equipments. The electronics have been redesigned to use CMOS transistors as active devices, which simplifies the circuit design and enlarge the tuning range, thus making the proposed electronic block more feasible, predictable, and precise. Additionally, we propose a newly designed sample holder, which facilitates the procedure to change a sample and improves reproducibility of the circuit. Our design minimizes the thermal leak of the measuring probe by one order of magnitude, allowing to measure from 1.8 K in standard PPMS systems, thanks to the use of a low temperature beryllium-copper coaxial cable instead of the conventional RG402 Cu coaxial cable employed in the insert for the PPMS in similar systems. The data acquisition method is also simplified, so that the measuring sequences are implemented directly in the PPMS controller computer by programming them in the Quantum Design MultiVu software that controls the PPMS. We present the test measurements performed on the system without sample to study the background signal and stability of the circuit. Measurements on a Gd2O3 calibrating sample yield to the estimation of the system sensitivity, which is found to be on the order of 10-6 emu. Finally, measurements on a TmCo2 Laves phase sample with a ferrimagnetic transition temperature around 4 K are described, demonstrating that the developed system is well suited to explore interesting magnetic phenomena at this temperature scale.
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Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 12-0219396 INIST |
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ET : | Low temperature radio-frequency transverse susceptibility measurements using a CMOS oscillator circuit |
AU : | FIGUEROA (A. I.); BARTOLOME (J.); DEL POZO (J. M. García); ARAUZO (A.); GUERRERO (E.); TELLEZ (P.); BARTOLOME (F.); GARIA (L. M.) |
AF : | Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Departamento de Física de la Materia Condensada/50009 Zaragoza/Espagne (1 aut., 2 aut., 7 aut., 8 aut.); Servicio de Instrumentación Electrónica, Universidad de Zaragoza/50009 Zaragoza/Espagne (3 aut., 6 aut.); Servicio de Medidas Fisicas, Universidad de Zaragoza/50009 Zaragoza/Espagne (4 aut., 5 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2012; Vol. 324; No. 17; Pp. 2669-2675; Bibl. 27 ref. |
LA : | Anglais |
EA : | A transverse susceptibility (TS) measurement system based on a simple inverter CMOS cell oscillator cross-coupled to a LC tank is presented. The system has been implemented to operate at a Quantum Design Physical Properties Measurement System (PPMS). We introduce several improvements with respect to similar currently operating TS measurement equipments. The electronics have been redesigned to use CMOS transistors as active devices, which simplifies the circuit design and enlarge the tuning range, thus making the proposed electronic block more feasible, predictable, and precise. Additionally, we propose a newly designed sample holder, which facilitates the procedure to change a sample and improves reproducibility of the circuit. Our design minimizes the thermal leak of the measuring probe by one order of magnitude, allowing to measure from 1.8 K in standard PPMS systems, thanks to the use of a low temperature beryllium-copper coaxial cable instead of the conventional RG402 Cu coaxial cable employed in the insert for the PPMS in similar systems. The data acquisition method is also simplified, so that the measuring sequences are implemented directly in the PPMS controller computer by programming them in the Quantum Design MultiVu software that controls the PPMS. We present the test measurements performed on the system without sample to study the background signal and stability of the circuit. Measurements on a Gd2O3 calibrating sample yield to the estimation of the system sensitivity, which is found to be on the order of 10-6 emu. Finally, measurements on a TmCo2 Laves phase sample with a ferrimagnetic transition temperature around 4 K are described, demonstrating that the developed system is well suited to explore interesting magnetic phenomena at this temperature scale. |
CC : | 001B00G57P |
FD : | Radiofréquence; Technologie MOS complémentaire; Méthode mesure; Susceptibilité magnétique; Conception; Oscillateur hyperfréquence; Etalonnage; Thulium alliage; Cobalt alliage; Matériau ferrimagnétique; Lanthanide alliage; Métal transition alliage |
ED : | Radiofrequency; Complementary MOS technology; Measuring methods; Magnetic susceptibility; Design; Microwave oscillators; Calibration; Thulium alloys; Cobalt alloys; Ferrimagnetic materials; Rare earth alloys; Transition element alloys |
SD : | Radiofrecuencia; Tecnología MOS complementario |
LO : | INIST-17230.354000507710060140 |
ID : | 12-0219396 |
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Pascal:12-0219396Le document en format XML
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<front><div type="abstract" xml:lang="en">A transverse susceptibility (TS) measurement system based on a simple inverter CMOS cell oscillator cross-coupled to a LC tank is presented. The system has been implemented to operate at a Quantum Design Physical Properties Measurement System (PPMS). We introduce several improvements with respect to similar currently operating TS measurement equipments. The electronics have been redesigned to use CMOS transistors as active devices, which simplifies the circuit design and enlarge the tuning range, thus making the proposed electronic block more feasible, predictable, and precise. Additionally, we propose a newly designed sample holder, which facilitates the procedure to change a sample and improves reproducibility of the circuit. Our design minimizes the thermal leak of the measuring probe by one order of magnitude, allowing to measure from 1.8 K in standard PPMS systems, thanks to the use of a low temperature beryllium-copper coaxial cable instead of the conventional RG402 Cu coaxial cable employed in the insert for the PPMS in similar systems. The data acquisition method is also simplified, so that the measuring sequences are implemented directly in the PPMS controller computer by programming them in the Quantum Design MultiVu software that controls the PPMS. We present the test measurements performed on the system without sample to study the background signal and stability of the circuit. Measurements on a Gd<sub>2</sub>
O<sub>3</sub>
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O<sub>3</sub>
calibrating sample yield to the estimation of the system sensitivity, which is found to be on the order of 10<sup>-6</sup>
emu. Finally, measurements on a TmCo<sub>2</sub>
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</fC03>
<fC03 i1="09" i2="3" l="ENG"><s0>Cobalt alloys</s0>
<s5>16</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Matériau ferrimagnétique</s0>
<s5>18</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Ferrimagnetic materials</s0>
<s5>18</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Lanthanide alliage</s0>
<s5>48</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Rare earth alloys</s0>
<s5>48</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Métal transition alliage</s0>
<s5>49</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Transition element alloys</s0>
<s5>49</s5>
</fC03>
<fN21><s1>170</s1>
</fN21>
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<server><NO>PASCAL 12-0219396 INIST</NO>
<ET>Low temperature radio-frequency transverse susceptibility measurements using a CMOS oscillator circuit</ET>
<AU>FIGUEROA (A. I.); BARTOLOME (J.); DEL POZO (J. M. García); ARAUZO (A.); GUERRERO (E.); TELLEZ (P.); BARTOLOME (F.); GARIA (L. M.)</AU>
<AF>Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Departamento de Física de la Materia Condensada/50009 Zaragoza/Espagne (1 aut., 2 aut., 7 aut., 8 aut.); Servicio de Instrumentación Electrónica, Universidad de Zaragoza/50009 Zaragoza/Espagne (3 aut., 6 aut.); Servicio de Medidas Fisicas, Universidad de Zaragoza/50009 Zaragoza/Espagne (4 aut., 5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2012; Vol. 324; No. 17; Pp. 2669-2675; Bibl. 27 ref.</SO>
<LA>Anglais</LA>
<EA>A transverse susceptibility (TS) measurement system based on a simple inverter CMOS cell oscillator cross-coupled to a LC tank is presented. The system has been implemented to operate at a Quantum Design Physical Properties Measurement System (PPMS). We introduce several improvements with respect to similar currently operating TS measurement equipments. The electronics have been redesigned to use CMOS transistors as active devices, which simplifies the circuit design and enlarge the tuning range, thus making the proposed electronic block more feasible, predictable, and precise. Additionally, we propose a newly designed sample holder, which facilitates the procedure to change a sample and improves reproducibility of the circuit. Our design minimizes the thermal leak of the measuring probe by one order of magnitude, allowing to measure from 1.8 K in standard PPMS systems, thanks to the use of a low temperature beryllium-copper coaxial cable instead of the conventional RG402 Cu coaxial cable employed in the insert for the PPMS in similar systems. The data acquisition method is also simplified, so that the measuring sequences are implemented directly in the PPMS controller computer by programming them in the Quantum Design MultiVu software that controls the PPMS. We present the test measurements performed on the system without sample to study the background signal and stability of the circuit. Measurements on a Gd<sub>2</sub>
O<sub>3</sub>
calibrating sample yield to the estimation of the system sensitivity, which is found to be on the order of 10<sup>-6</sup>
emu. Finally, measurements on a TmCo<sub>2</sub>
Laves phase sample with a ferrimagnetic transition temperature around 4 K are described, demonstrating that the developed system is well suited to explore interesting magnetic phenomena at this temperature scale.</EA>
<CC>001B00G57P</CC>
<FD>Radiofréquence; Technologie MOS complémentaire; Méthode mesure; Susceptibilité magnétique; Conception; Oscillateur hyperfréquence; Etalonnage; Thulium alliage; Cobalt alliage; Matériau ferrimagnétique; Lanthanide alliage; Métal transition alliage</FD>
<ED>Radiofrequency; Complementary MOS technology; Measuring methods; Magnetic susceptibility; Design; Microwave oscillators; Calibration; Thulium alloys; Cobalt alloys; Ferrimagnetic materials; Rare earth alloys; Transition element alloys</ED>
<SD>Radiofrecuencia; Tecnología MOS complementario</SD>
<LO>INIST-17230.354000507710060140</LO>
<ID>12-0219396</ID>
</server>
</inist>
</record>
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